Finding the Fourth Proportional to 141,025.32, 194,446.98 and 129,128.04

Step by Step Solution

1. Step 1: Write the proportion equation
   141,025.32 : 194,446.98 = 129,128.04 : x
2. Step 2: Convert to fraction form
   141,025.32/194,446.98 = 129,128.04/x
3. Step 3: Cross multiply
   141,025.32x = 194,446.98 × 129,128.04
4. Step 4: Simplify right side
   141,025.32x = 25,108,557,411.32
5. Step 5: Solve for x
   x = 25,108,557,411.32/141,025.32
6. Step 6: Final answer
   x = 178,042.90