Finding the Fourth Proportional to 131,255.42, 196,902.45 and 42,479.42

Step by Step Solution

1. Step 1: Write the proportion equation
   131,255.42 : 196,902.45 = 42,479.42 : x
2. Step 2: Convert to fraction form
   131,255.42/196,902.45 = 42,479.42/x
3. Step 3: Cross multiply
   131,255.42x = 196,902.45 × 42,479.42
4. Step 4: Simplify right side
   131,255.42x = 8,364,301,872.58
5. Step 5: Solve for x
   x = 8,364,301,872.58/131,255.42
6. Step 6: Final answer
   x = 63,725.38