Finding the Fourth Proportional to 143,584.64, 198,143.51 and 89,899.25

Step by Step Solution

1. Step 1: Write the proportion equation
   143,584.64 : 198,143.51 = 89,899.25 : x
2. Step 2: Convert to fraction form
   143,584.64/198,143.51 = 89,899.25/x
3. Step 3: Cross multiply
   143,584.64x = 198,143.51 × 89,899.25
4. Step 4: Simplify right side
   143,584.64x = 17,812,951,501.15
5. Step 5: Solve for x
   x = 17,812,951,501.15/143,584.64
6. Step 6: Final answer
   x = 124,058.90