5. Bill Gates
Bill Gates is been at the top of the list of the richest men in the world for several years. Today he has an empire worth $106.6 billion. He is passionate about giving away most of his wealth for causes supporting the elimination of diseases, poverty, and hunger. He founded the Bill and Melinda Gates Foundation to donate their money. Bill once said in an interview that 99% of their fortune is going to be donated to charity.