Finding the Fourth Proportional to 131,145.30, 196,766.55 and 42,401.70

Step by Step Solution

1. Step 1: Write the proportion equation
   131,145.30 : 196,766.55 = 42,401.70 : x
2. Step 2: Convert to fraction form
   131,145.30/196,766.55 = 42,401.70/x
3. Step 3: Cross multiply
   131,145.30x = 196,766.55 × 42,401.70
4. Step 4: Simplify right side
   131,145.30x = 8,343,236,223.14
5. Step 5: Solve for x
   x = 8,343,236,223.14/131,145.30
6. Step 6: Final answer
   x = 63,618.26