Finding the Fourth Proportional to 126,380.38, 189,557.29 and 42,131.47

Step by Step Solution

1. Step 1: Write the proportion equation
   126,380.38 : 189,557.29 = 42,131.47 : x
2. Step 2: Convert to fraction form
   126,380.38/189,557.29 = 42,131.47/x
3. Step 3: Cross multiply
   126,380.38x = 189,557.29 × 42,131.47
4. Step 4: Simplify right side
   126,380.38x = 7,986,327,276.92
5. Step 5: Solve for x
   x = 7,986,327,276.92/126,380.38
6. Step 6: Final answer
   x = 63,192.78