Finding the Fourth Proportional to 161,233.61, 222,492.83 and 89,611.18

Step by Step Solution

1. Step 1: Write the proportion equation
   161,233.61 : 222,492.83 = 89,611.18 : x
2. Step 2: Convert to fraction form
   161,233.61/222,492.83 = 89,611.18/x
3. Step 3: Cross multiply
   161,233.61x = 222,492.83 × 89,611.18
4. Step 4: Simplify right side
   161,233.61x = 19,937,844,033.55
5. Step 5: Solve for x
   x = 19,937,844,033.55/161,233.61
6. Step 6: Final answer
   x = 123,658.12