Finding the Fourth Proportional to 131,470.40, 181,428.72 and 74,891.36

Step by Step Solution

1. Step 1: Write the proportion equation
   131,470.40 : 181,428.72 = 74,891.36 : x
2. Step 2: Convert to fraction form
   131,470.40/181,428.72 = 74,891.36/x
3. Step 3: Cross multiply
   131,470.40x = 181,428.72 × 74,891.36
4. Step 4: Simplify right side
   131,470.40x = 13,587,443,583.86
5. Step 5: Solve for x
   x = 13,587,443,583.86/131,470.40
6. Step 6: Final answer
   x = 103,349.83