Finding the Fourth Proportional to 88,947.30, 133,092.90 and 81,074.10

Step by Step Solution

1. Step 1: Write the proportion equation
   88,947.30 : 133,092.90 = 81,074.10 : x
2. Step 2: Convert to fraction form
   88,947.30/133,092.90 = 81,074.10/x
3. Step 3: Cross multiply
   88,947.30x = 133,092.90 × 81,074.10
4. Step 4: Simplify right side
   88,947.30x = 10,790,387,083.89
5. Step 5: Solve for x
   x = 10,790,387,083.89/88,947.30
6. Step 6: Final answer
   x = 121,312.14