Finding the Fourth Proportional to 71,760.94, 99,032.83 and 39,929.15

Step by Step Solution

1. Step 1: Write the proportion equation
   71,760.94 : 99,032.83 = 39,929.15 : x
2. Step 2: Convert to fraction form
   71,760.94/99,032.83 = 39,929.15/x
3. Step 3: Cross multiply
   71,760.94x = 99,032.83 × 39,929.15
4. Step 4: Simplify right side
   71,760.94x = 3,954,296,871.75
5. Step 5: Solve for x
   x = 3,954,296,871.75/71,760.94
6. Step 6: Final answer
   x = 55,103.75