Finding the Fourth Proportional to 131,150.91, 180,981.86 and 74,561.07

Step by Step Solution

1. Step 1: Write the proportion equation
   131,150.91 : 180,981.86 = 74,561.07 : x
2. Step 2: Convert to fraction form
   131,150.91/180,981.86 = 74,561.07/x
3. Step 3: Cross multiply
   131,150.91x = 180,981.86 × 74,561.07
4. Step 4: Simplify right side
   131,150.91x = 13,494,200,759.38
5. Step 5: Solve for x
   x = 13,494,200,759.38/131,150.91
6. Step 6: Final answer
   x = 102,890.64