Finding the Fourth Proportional to 88,819.30, 133,034.55 and 77,155.30

Step by Step Solution

1. Step 1: Write the proportion equation
   88,819.30 : 133,034.55 = 77,155.30 : x
2. Step 2: Convert to fraction form
   88,819.30/133,034.55 = 77,155.30/x
3. Step 3: Cross multiply
   88,819.30x = 133,034.55 × 77,155.30
4. Step 4: Simplify right side
   88,819.30x = 10,264,320,615.62
5. Step 5: Solve for x
   x = 10,264,320,615.62/88,819.30
6. Step 6: Final answer
   x = 115,564.08