Finding the Fourth Proportional to 88,941.30, 133,083.90 and 81,068.10

Step by Step Solution

1. Step 1: Write the proportion equation
   88,941.30 : 133,083.90 = 81,068.10 : x
2. Step 2: Convert to fraction form
   88,941.30/133,083.90 = 81,068.10/x
3. Step 3: Cross multiply
   88,941.30x = 133,083.90 × 81,068.10
4. Step 4: Simplify right side
   88,941.30x = 10,788,858,913.59
5. Step 5: Solve for x
   x = 10,788,858,913.59/88,941.30
6. Step 6: Final answer
   x = 121,303.14