A businessman (also known as an entrepreneur), a well-known author, has shared his story in the bestselling book titled Rich Dad Poor Dad. He made most of his money through various investments, and because of that, he's praised as one of the richest businessmen in the world - he currently has $100 million available to him, with more to likely come! Whether you have read any of his books or not - you'll find it difficult NOT knowing about Robert Kiyosaki if you've spent any time on social media or watched television commercials recently, especially if you're a fan of either Google or Facebook.