Finding the Fourth Proportional to 161,387.62, 222,711.72 and 89,766.10

Step by Step Solution

1. Step 1: Write the proportion equation
   161,387.62 : 222,711.72 = 89,766.10 : x
2. Step 2: Convert to fraction form
   161,387.62/222,711.72 = 89,766.10/x
3. Step 3: Cross multiply
   161,387.62x = 222,711.72 × 89,766.10
4. Step 4: Simplify right side
   161,387.62x = 19,991,962,528.69
5. Step 5: Solve for x
   x = 19,991,962,528.69/161,387.62
6. Step 6: Final answer
   x = 123,875.44