Finding the Fourth Proportional to 42,132.42, 63,273.89 and 40,439.21

Step by Step Solution

1. Step 1: Write the proportion equation
   42,132.42 : 63,273.89 = 40,439.21 : x
2. Step 2: Convert to fraction form
   42,132.42/63,273.89 = 40,439.21/x
3. Step 3: Cross multiply
   42,132.42x = 63,273.89 × 40,439.21
4. Step 4: Simplify right side
   42,132.42x = 2,558,745,909.96
5. Step 5: Solve for x
   x = 2,558,745,909.96/42,132.42
6. Step 6: Final answer
   x = 60,731.05