Finding the Fourth Proportional to 88,563.10, 133,103.85 and 77,158.30

Step by Step Solution

1. Step 1: Write the proportion equation
   88,563.10 : 133,103.85 = 77,158.30 : x
2. Step 2: Convert to fraction form
   88,563.10/133,103.85 = 77,158.30/x
3. Step 3: Cross multiply
   88,563.10x = 133,103.85 × 77,158.30
4. Step 4: Simplify right side
   88,563.10x = 10,270,066,789.46
5. Step 5: Solve for x
   x = 10,270,066,789.46/88,563.10
6. Step 6: Final answer
   x = 115,963.27