Finding the Fourth Proportional to 71,807.28, 99,097.52 and 39,976.17

Step by Step Solution

1. Step 1: Write the proportion equation
   71,807.28 : 99,097.52 = 39,976.17 : x
2. Step 2: Convert to fraction form
   71,807.28/99,097.52 = 39,976.17/x
3. Step 3: Cross multiply
   71,807.28x = 99,097.52 × 39,976.17
4. Step 4: Simplify right side
   71,807.28x = 3,961,539,306.10
5. Step 5: Solve for x
   x = 3,961,539,306.10/71,807.28
6. Step 6: Final answer
   x = 55,169.05