Finding the Fourth Proportional to 143,540.52, 198,082.98 and 89,855.14

Step by Step Solution

1. Step 1: Write the proportion equation
   143,540.52 : 198,082.98 = 89,855.14 : x
2. Step 2: Convert to fraction form
   143,540.52/198,082.98 = 89,855.14/x
3. Step 3: Cross multiply
   143,540.52x = 198,082.98 × 89,855.14
4. Step 4: Simplify right side
   143,540.52x = 17,798,772,909.10
5. Step 5: Solve for x
   x = 17,798,772,909.10/143,540.52
6. Step 6: Final answer
   x = 123,998.25