Finding the Fourth Proportional to 131,256.42, 196,903.95 and 42,480.42

Step by Step Solution

1. Step 1: Write the proportion equation
   131,256.42 : 196,903.95 = 42,480.42 : x
2. Step 2: Convert to fraction form
   131,256.42/196,903.95 = 42,480.42/x
3. Step 3: Cross multiply
   131,256.42x = 196,903.95 × 42,480.42
4. Step 4: Simplify right side
   131,256.42x = 8,364,562,495.66
5. Step 5: Solve for x
   x = 8,364,562,495.66/131,256.42
6. Step 6: Final answer
   x = 63,726.88