Finding the Fourth Proportional to 143,553.29, 198,103.23 and 89,085.17

Step by Step Solution

1. Step 1: Write the proportion equation
   143,553.29 : 198,103.23 = 89,085.17 : x
2. Step 2: Convert to fraction form
   143,553.29/198,103.23 = 89,085.17/x
3. Step 3: Cross multiply
   143,553.29x = 198,103.23 × 89,085.17
4. Step 4: Simplify right side
   143,553.29x = 17,648,058,931.58
5. Step 5: Solve for x
   x = 17,648,058,931.58/143,553.29
6. Step 6: Final answer
   x = 122,937.34