Finding the Fourth Proportional to 131,158.72, 196,748.88 and 42,426.46

Step by Step Solution

1. Step 1: Write the proportion equation
   131,158.72 : 196,748.88 = 42,426.46 : x
2. Step 2: Convert to fraction form
   131,158.72/196,748.88 = 42,426.46/x
3. Step 3: Cross multiply
   131,158.72x = 196,748.88 × 42,426.46
4. Step 4: Simplify right side
   131,158.72x = 8,347,358,487.36
5. Step 5: Solve for x
   x = 8,347,358,487.36/131,158.72
6. Step 6: Final answer
   x = 63,643.18