Finding the Fourth Proportional to 161,112.20, 222,334.72 and 89,498.88

Step by Step Solution

1. Step 1: Write the proportion equation
   161,112.20 : 222,334.72 = 89,498.88 : x
2. Step 2: Convert to fraction form
   161,112.20/222,334.72 = 89,498.88/x
3. Step 3: Cross multiply
   161,112.20x = 222,334.72 × 89,498.88
4. Step 4: Simplify right side
   161,112.20x = 19,898,708,201.37
5. Step 5: Solve for x
   x = 19,898,708,201.37/161,112.20
6. Step 6: Final answer
   x = 123,508.39