Finding the Fourth Proportional to 131,167.69, 196,757.69 and 42,428.12

Step by Step Solution

1. Step 1: Write the proportion equation
   131,167.69 : 196,757.69 = 42,428.12 : x
2. Step 2: Convert to fraction form
   131,167.69/196,757.69 = 42,428.12/x
3. Step 3: Cross multiply
   131,167.69x = 196,757.69 × 42,428.12
4. Step 4: Simplify right side
   131,167.69x = 8,348,058,882.24
5. Step 5: Solve for x
   x = 8,348,058,882.24/131,167.69
6. Step 6: Final answer
   x = 63,644.17