Finding the Fourth Proportional to 161,238.62, 222,499.70 and 89,616.18

Step by Step Solution

1. Step 1: Write the proportion equation
   161,238.62 : 222,499.70 = 89,616.18 : x
2. Step 2: Convert to fraction form
   161,238.62/222,499.70 = 89,616.18/x
3. Step 3: Cross multiply
   161,238.62x = 222,499.70 × 89,616.18
4. Step 4: Simplify right side
   161,238.62x = 19,939,573,165.15
5. Step 5: Solve for x
   x = 19,939,573,165.15/161,238.62
6. Step 6: Final answer
   x = 123,665.00