Warren Buffett's Berkshire Hathaway Company went public in 1965. The public offering price was $18 per share. The stock was trading at $92,400 on April 10, 2009, and the market value of the firm was $97.8 billion.
(a) What is the firm's average annual compound growth rate over last 44 years?
(b) If Mr. Buffett's company continues to grow at the historical growth rate, what will be his company's total market value when he reaches the age of 100? (Buffett celebrated his 78th birthday in 2009.)