Finding the Fourth Proportional to 161,019.50, 222,213.85 and 89,399.53

Step by Step Solution

1. Step 1: Write the proportion equation
   161,019.50 : 222,213.85 = 89,399.53 : x
2. Step 2: Convert to fraction form
   161,019.50/222,213.85 = 89,399.53/x
3. Step 3: Cross multiply
   161,019.50x = 222,213.85 × 89,399.53
4. Step 4: Simplify right side
   161,019.50x = 19,865,813,803.76
5. Step 5: Solve for x
   x = 19,865,813,803.76/161,019.50
6. Step 6: Final answer
   x = 123,375.21