Finding the Fourth Proportional to 131,426.18, 197,097.90 and 42,659.18

Step by Step Solution

1. Step 1: Write the proportion equation
   131,426.18 : 197,097.90 = 42,659.18 : x
2. Step 2: Convert to fraction form
   131,426.18/197,097.90 = 42,659.18/x
3. Step 3: Cross multiply
   131,426.18x = 197,097.90 × 42,659.18
4. Step 4: Simplify right side
   131,426.18x = 8,408,034,793.72
5. Step 5: Solve for x
   x = 8,408,034,793.72/131,426.18
6. Step 6: Final answer
   x = 63,975.34