Finding the Fourth Proportional to 71,500.47, 98,669.34 and 39,668.69

Step by Step Solution

1. Step 1: Write the proportion equation
   71,500.47 : 98,669.34 = 39,668.69 : x
2. Step 2: Convert to fraction form
   71,500.47/98,669.34 = 39,668.69/x
3. Step 3: Cross multiply
   71,500.47x = 98,669.34 × 39,668.69
4. Step 4: Simplify right side
   71,500.47x = 3,914,082,967.62
5. Step 5: Solve for x
   x = 3,914,082,967.62/71,500.47
6. Step 6: Final answer
   x = 54,742.06