Finding the Fourth Proportional to 157,581.18, 217,443.69 and 89,605.98

Step by Step Solution

1. Step 1: Write the proportion equation
   157,581.18 : 217,443.69 = 89,605.98 : x
2. Step 2: Convert to fraction form
   157,581.18/217,443.69 = 89,605.98/x
3. Step 3: Cross multiply
   157,581.18x = 217,443.69 × 89,605.98
4. Step 4: Simplify right side
   157,581.18x = 19,484,254,937.27
5. Step 5: Solve for x
   x = 19,484,254,937.27/157,581.18
6. Step 6: Final answer
   x = 123,645.82