Finding the Fourth Proportional to 131,311.92, 196,975.98 and 89,174.10

Step by Step Solution

1. Step 1: Write the proportion equation
   131,311.92 : 196,975.98 = 89,174.10 : x
2. Step 2: Convert to fraction form
   131,311.92/196,975.98 = 89,174.10/x
3. Step 3: Cross multiply
   131,311.92x = 196,975.98 × 89,174.10
4. Step 4: Simplify right side
   131,311.92x = 17,565,155,738.12
5. Step 5: Solve for x
   x = 17,565,155,738.12/131,311.92
6. Step 6: Final answer
   x = 133,766.65