Finding the Fourth Proportional to 161,434.48, 222,782.56 and 89,821.18

Step by Step Solution

1. Step 1: Write the proportion equation
   161,434.48 : 222,782.56 = 89,821.18 : x
2. Step 2: Convert to fraction form
   161,434.48/222,782.56 = 89,821.18/x
3. Step 3: Cross multiply
   161,434.48x = 222,782.56 × 89,821.18
4. Step 4: Simplify right side
   161,434.48x = 20,010,592,422.62
5. Step 5: Solve for x
   x = 20,010,592,422.62/161,434.48
6. Step 6: Final answer
   x = 123,954.89