Finding the Fourth Proportional to 442,086.32, 663,258.88 and 142,560.88

Step by Step Solution

1. Step 1: Write the proportion equation
   442,086.32 : 663,258.88 = 142,560.88 : x
2. Step 2: Convert to fraction form
   442,086.32/663,258.88 = 142,560.88/x
3. Step 3: Cross multiply
   442,086.32x = 663,258.88 × 142,560.88
4. Step 4: Simplify right side
   442,086.32x = 94,554,769,600.61
5. Step 5: Solve for x
   x = 94,554,769,600.61/442,086.32
6. Step 6: Final answer
   x = 213,883.05