Finding the Fourth Proportional to 88,532.10, 133,057.35 and 77,127.30

Step by Step Solution

1. Step 1: Write the proportion equation
   88,532.10 : 133,057.35 = 77,127.30 : x
2. Step 2: Convert to fraction form
   88,532.10/133,057.35 = 77,127.30/x
3. Step 3: Cross multiply
   88,532.10x = 133,057.35 × 77,127.30
4. Step 4: Simplify right side
   88,532.10x = 10,262,354,150.66
5. Step 5: Solve for x
   x = 10,262,354,150.66/88,532.10
6. Step 6: Final answer
   x = 115,916.76