The US has a huge economy, thus, it is no surprise that it has a lot of billionaires. As of August 23, 2017, the richest man in the world is Bill Gates, with a fortune of $84.7 billion. The founder of Microsoft has been a successful businessman for a long time. Second is Amancio Ortega, a Spaniard who founded Zara. He is the richest man in Europe, with a net worth of $83.8 billion. Jeff Bezos comes next. As the founder of Amazon, his fortune tallies $81.7 billion. He is also the youngest of the four richest men on the planet at just 53. Next is Warren Buffett with his fortune of $77.5 billion.

Bill Gates

The software businessman is the head of the Bill & Melinda Gates Foundation. The goal of this foundation is to improve lives and the health of the population. Bill Gates has topped the billionaire list for 18 of the last 23 years. He founded Microsoft with Paul Allen in 1975 and he remains as a board member of the software giant. Microsoft is a leading company in information technology.

Amancio Ortega

Ortega is the richest retailer in the world and is a pioneer in fast fashion. Amancio founded Inditex, which holds the Zara parent, with his wife Rosalia Mera more than three decades ago. The Spanish businessman makes more than $400 million per year in dividends. The Spanish businessman has also invested in a growing real estate portfolio having buildings in London, Chicago, Miami, New York, Madrid, and Barcelona.

Jeff Bezos

This American businessman is the founder and Chief Executive Officer (CEO) of Amazon. A short time ago he became the richest man in the world. He owns about 17 percent of Amazon. He founded his company more than two decades ago in a garage in Seattle. He also has other goals in his life and he owns the aerospace company Blue Origin.

This company is developing a reusable rocket that will carry passengers. The third richest man in the world bought The Washington Post four years ago.

Warren Buffett

The "Oracle of Omaha" is one of the greatest investors in history and he's the CEO of Berkshire Hathaway. This successful businessman is the son of a politician.

He owns Duracell, Geico, Dairy Queen, and more than sixty companies altogether. At an early age, he began to develop his business skills and he bought stocks when he was eleven, and he paid taxes when he was thirteen. He has given almost $32 billion to charity. He launched the Giving Pledge with Bill Gates, asking rich people to donate their wealth.