Finding the Fourth Proportional to 42,496.46, 63,587.46 and 25,639.25

Step by Step Solution

1. Step 1: Write the proportion equation
   42,496.46 : 63,587.46 = 25,639.25 : x
2. Step 2: Convert to fraction form
   42,496.46/63,587.46 = 25,639.25/x
3. Step 3: Cross multiply
   42,496.46x = 63,587.46 × 25,639.25
4. Step 4: Simplify right side
   42,496.46x = 1,630,334,417.79
5. Step 5: Solve for x
   x = 1,630,334,417.79/42,496.46
6. Step 6: Final answer
   x = 38,364.01