Finding the Fourth Proportional to 161,340.28, 222,648.72 and 89,716.12

Step by Step Solution

1. Step 1: Write the proportion equation
   161,340.28 : 222,648.72 = 89,716.12 : x
2. Step 2: Convert to fraction form
   161,340.28/222,648.72 = 89,716.12/x
3. Step 3: Cross multiply
   161,340.28x = 222,648.72 × 89,716.12
4. Step 4: Simplify right side
   161,340.28x = 19,975,179,281.37
5. Step 5: Solve for x
   x = 19,975,179,281.37/161,340.28
6. Step 6: Final answer
   x = 123,807.76