Step one: Forecast the dividends beyond the 3 year growth horizon (thats all we need to solve the problem). Start with D1 and then multiply that by 1.4 for the first three years, and then 1.06 for the final period.
Do = 2.18, D1 = 3.052, D2 = 4.2728, D3 = 5.9812, D4 = 6.34
Step Two: Use the Discount Dividend Model, or the Gordon Growth Model to calculate the terminal value of the stock after the regular growth period has begun. Use the following formula:
Po = D1 / (R-g)
Where: Po is stock price today
D1 = Next dividend
R = Required return on the stock, and
g = Growth rate
79.25 = 6.34 / (0.14 - 0.06) --> This is the value not today, but at t = 3, so discount this 3 years along with the final dividend from the 40% growth period.
Step Three: Calculate the stock value today by adding together all the expected dividends and the terminal value, and then discounting each cash flow appropriately.
Po = 3.052/(1.14) + 4.2728/(1.14)^2 + 5.9812/(1.14)^3 + 79.25/(1.14)^3
You can also put these in your CF function if you have a BAII or similar finance calculator, that will be the quickest way!
The answer is $63.49