Finding the Fourth Proportional to 42,397.52, 63,469.88 and 25,707.28

Step by Step Solution

1. Step 1: Write the proportion equation
   42,397.52 : 63,469.88 = 25,707.28 : x
2. Step 2: Convert to fraction form
   42,397.52/63,469.88 = 25,707.28/x
3. Step 3: Cross multiply
   42,397.52x = 63,469.88 × 25,707.28
4. Step 4: Simplify right side
   42,397.52x = 1,631,637,976.73
5. Step 5: Solve for x
   x = 1,631,637,976.73/42,397.52
6. Step 6: Final answer
   x = 38,484.28