Finding the Fourth Proportional to 161,304.72, 222,587.85 and 89,680.38

Step by Step Solution

1. Step 1: Write the proportion equation
   161,304.72 : 222,587.85 = 89,680.38 : x
2. Step 2: Convert to fraction form
   161,304.72/222,587.85 = 89,680.38/x
3. Step 3: Cross multiply
   161,304.72x = 222,587.85 × 89,680.38
4. Step 4: Simplify right side
   161,304.72x = 19,961,762,971.38
5. Step 5: Solve for x
   x = 19,961,762,971.38/161,304.72
6. Step 6: Final answer
   x = 123,751.88