4. Larry Ellison
Larry Ellison is the founder, executive chairman and chief technology officer of Oracle Corporation. He is listed by Forbes as the 3rd wealthiest man in American and 5th wealthiest in the world, with a wealth of over $56 billion. He is a well-known philanthropist who has donated a substantial percentage of his wealth to charity. Additionally, he is a very successful yachter, through his Oracle Team USA, and is a licensed pilot who owns 2 fighter planes.