Finding the Fourth Proportional to 131,238.81, 196,889.58 and 42,492.42

Step by Step Solution

1. Step 1: Write the proportion equation
   131,238.81 : 196,889.58 = 42,492.42 : x
2. Step 2: Convert to fraction form
   131,238.81/196,889.58 = 42,492.42/x
3. Step 3: Cross multiply
   131,238.81x = 196,889.58 × 42,492.42
4. Step 4: Simplify right side
   131,238.81x = 8,366,314,726.98
5. Step 5: Solve for x
   x = 8,366,314,726.98/131,238.81
6. Step 6: Final answer
   x = 63,748.79