Finding the Fourth Proportional to 42,439.38, 63,912.96 and 38,656.04

Step by Step Solution

1. Step 1: Write the proportion equation
   42,439.38 : 63,912.96 = 38,656.04 : x
2. Step 2: Convert to fraction form
   42,439.38/63,912.96 = 38,656.04/x
3. Step 3: Cross multiply
   42,439.38x = 63,912.96 × 38,656.04
4. Step 4: Simplify right side
   42,439.38x = 2,470,621,938.28
5. Step 5: Solve for x
   x = 2,470,621,938.28/42,439.38
6. Step 6: Final answer
   x = 58,215.32