Finding the Fourth Proportional to 129,525.57, 178,753.37 and 78,542.82

Step by Step Solution

1. Step 1: Write the proportion equation
   129,525.57 : 178,753.37 = 78,542.82 : x
2. Step 2: Convert to fraction form
   129,525.57/178,753.37 = 78,542.82/x
3. Step 3: Cross multiply
   129,525.57x = 178,753.37 × 78,542.82
4. Step 4: Simplify right side
   129,525.57x = 14,039,793,371.59
5. Step 5: Solve for x
   x = 14,039,793,371.59/129,525.57
6. Step 6: Final answer
   x = 108,393.99