Finding the Fourth Proportional to 59,908.16, 89,872.88 and 20,456.03

Step by Step Solution

1. Step 1: Write the proportion equation
   59,908.16 : 89,872.88 = 20,456.03 : x
2. Step 2: Convert to fraction form
   59,908.16/89,872.88 = 20,456.03/x
3. Step 3: Cross multiply
   59,908.16x = 89,872.88 × 20,456.03
4. Step 4: Simplify right side
   59,908.16x = 1,838,442,451.87
5. Step 5: Solve for x
   x = 1,838,442,451.87/59,908.16
6. Step 6: Final answer
   x = 30,687.68