2. Bill Gates:
Bill Gates The former most richest man in the world is an American businessman, programmer, entrepreneur, philanthropist and investor. He co-founded the world’s largest PC software company Microsoft in 1975. He is an Alma meter of Harvard University and has served as the CEO, chairman and chief software architect at Microsoft. He was the no.1 wealthiest from 1995 to 2007, again in 2009 and has been since 2014. He is recognized as one of the greatest entrepreneurs of the personal computer evolution. This wealthiest man on Earth has net worth of US$92 billion. Bill Gates is known for numerous philanthropic activities through the Bill& Melinda Gates Foundation, donating large amounts of money to various humanitarian causes and science research programs.