Finding the Fourth Proportional to 71,684.52, 98,921.82 and 39,851.10

Step by Step Solution

1. Step 1: Write the proportion equation
   71,684.52 : 98,921.82 = 39,851.10 : x
2. Step 2: Convert to fraction form
   71,684.52/98,921.82 = 39,851.10/x
3. Step 3: Cross multiply
   71,684.52x = 98,921.82 × 39,851.10
4. Step 4: Simplify right side
   71,684.52x = 3,942,143,341.00
5. Step 5: Solve for x
   x = 3,942,143,341.00/71,684.52
6. Step 6: Final answer
   x = 54,992.95