Apple is the most valuable public company on earth. There are much larger non-publicly traded companies. http://www.quora.com/Business/What-is-the-most-valuabl

Apple is the most valuable public company on earth. There are much larger non-publicly traded companies. http://www.quora.com/Business/What-is-the-most-valuable-private-company-in-the-world http://www.quora.com/Business/What-is-the-most-valuable-priv...