Finding the Fourth Proportional to 59,923.38, 89,900.46 and 20,480.49

Step by Step Solution

1. Step 1: Write the proportion equation
   59,923.38 : 89,900.46 = 20,480.49 : x
2. Step 2: Convert to fraction form
   59,923.38/89,900.46 = 20,480.49/x
3. Step 3: Cross multiply
   59,923.38x = 89,900.46 × 20,480.49
4. Step 4: Simplify right side
   59,923.38x = 1,841,205,472.03
5. Step 5: Solve for x
   x = 1,841,205,472.03/59,923.38
6. Step 6: Final answer
   x = 30,725.99