Finding the Fourth Proportional to 88,820.30, 133,036.05 and 77,156.30

Step by Step Solution

1. Step 1: Write the proportion equation
   88,820.30 : 133,036.05 = 77,156.30 : x
2. Step 2: Convert to fraction form
   88,820.30/133,036.05 = 77,156.30/x
3. Step 3: Cross multiply
   88,820.30x = 133,036.05 × 77,156.30
4. Step 4: Simplify right side
   88,820.30x = 10,264,569,384.62
5. Step 5: Solve for x
   x = 10,264,569,384.62/88,820.30
6. Step 6: Final answer
   x = 115,565.58