Finding the Fourth Proportional to 42,378.32, 58,487.88 and 25,616.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,378.32 : 58,487.88 = 25,616.72 : x
2. Step 2: Convert to fraction form
   42,378.32/58,487.88 = 25,616.72/x
3. Step 3: Cross multiply
   42,378.32x = 58,487.88 × 25,616.72
4. Step 4: Simplify right side
   42,378.32x = 1,498,267,645.35
5. Step 5: Solve for x
   x = 1,498,267,645.35/42,378.32
6. Step 6: Final answer
   x = 35,354.58