Finding the Fourth Proportional to 161,488.20, 222,850.71 and 89,867.55

Step by Step Solution

1. Step 1: Write the proportion equation
   161,488.20 : 222,850.71 = 89,867.55 : x
2. Step 2: Convert to fraction form
   161,488.20/222,850.71 = 89,867.55/x
3. Step 3: Cross multiply
   161,488.20x = 222,850.71 × 89,867.55
4. Step 4: Simplify right side
   161,488.20x = 20,027,047,323.46
5. Step 5: Solve for x
   x = 20,027,047,323.46/161,488.20
6. Step 6: Final answer
   x = 124,015.55