Finding the Fourth Proportional to 131,161.72, 196,753.38 and 42,429.46

Step by Step Solution

1. Step 1: Write the proportion equation
   131,161.72 : 196,753.38 = 42,429.46 : x
2. Step 2: Convert to fraction form
   131,161.72/196,753.38 = 42,429.46/x
3. Step 3: Cross multiply
   131,161.72x = 196,753.38 × 42,429.46
4. Step 4: Simplify right side
   131,161.72x = 8,348,139,666.57
5. Step 5: Solve for x
   x = 8,348,139,666.57/131,161.72
6. Step 6: Final answer
   x = 63,647.68