Finding the Fourth Proportional to 131,359.50, 196,988.22 and 42,591.60

Step by Step Solution

1. Step 1: Write the proportion equation
   131,359.50 : 196,988.22 = 42,591.60 : x
2. Step 2: Convert to fraction form
   131,359.50/196,988.22 = 42,591.60/x
3. Step 3: Cross multiply
   131,359.50x = 196,988.22 × 42,591.60
4. Step 4: Simplify right side
   131,359.50x = 8,390,043,470.95
5. Step 5: Solve for x
   x = 8,390,043,470.95/131,359.50
6. Step 6: Final answer
   x = 63,870.85