Finding the Fourth Proportional to 88,815.30, 133,028.55 and 77,151.30

Step by Step Solution

1. Step 1: Write the proportion equation
   88,815.30 : 133,028.55 = 77,151.30 : x
2. Step 2: Convert to fraction form
   88,815.30/133,028.55 = 77,151.30/x
3. Step 3: Cross multiply
   88,815.30x = 133,028.55 × 77,151.30
4. Step 4: Simplify right side
   88,815.30x = 10,263,325,569.62
5. Step 5: Solve for x
   x = 10,263,325,569.62/88,815.30
6. Step 6: Final answer
   x = 115,558.08