Finding the Fourth Proportional to 161,112.70, 222,335.41 and 89,499.38

Step by Step Solution

1. Step 1: Write the proportion equation
   161,112.70 : 222,335.41 = 89,499.38 : x
2. Step 2: Convert to fraction form
   161,112.70/222,335.41 = 89,499.38/x
3. Step 3: Cross multiply
   161,112.70x = 222,335.41 × 89,499.38
4. Step 4: Simplify right side
   161,112.70x = 19,898,880,899.55
5. Step 5: Solve for x
   x = 19,898,880,899.55/161,112.70
6. Step 6: Final answer
   x = 123,509.08