Bill Gates is the richest man in the world with a net worth of $79.2 billion. He was born in Seattle, Washington in 1955 to an attorney father and teacher mother. Gates showed an early interest in computers and wrote his first program at age 13. He co-founded Microsoft in 1975 with Paul Allen and developed the operating system for the first IBM personal computer. Under Gates' leadership, Microsoft became the worldwide leader in software. Gates has received numerous honors and has donated over $29 billion to his philanthropic foundation with his wife to fund global health and education initiatives.