Finding the Fourth Proportional to 42,438.38, 63,911.46 and 38,655.04

Step by Step Solution

1. Step 1: Write the proportion equation
   42,438.38 : 63,911.46 = 38,655.04 : x
2. Step 2: Convert to fraction form
   42,438.38/63,911.46 = 38,655.04/x
3. Step 3: Cross multiply
   42,438.38x = 63,911.46 × 38,655.04
4. Step 4: Simplify right side
   42,438.38x = 2,470,499,849.48
5. Step 5: Solve for x
   x = 2,470,499,849.48/42,438.38
6. Step 6: Final answer
   x = 58,213.81