Finding the Fourth Proportional to 59,963.99, 89,847.56 and 20,499.57

Step by Step Solution

1. Step 1: Write the proportion equation
   59,963.99 : 89,847.56 = 20,499.57 : x
2. Step 2: Convert to fraction form
   59,963.99/89,847.56 = 20,499.57/x
3. Step 3: Cross multiply
   59,963.99x = 89,847.56 × 20,499.57
4. Step 4: Simplify right side
   59,963.99x = 1,841,836,243.05
5. Step 5: Solve for x
   x = 1,841,836,243.05/59,963.99
6. Step 6: Final answer
   x = 30,715.71