Finding the Fourth Proportional to 165,012.72, 227,717.76 and 89,561.24

Step by Step Solution

1. Step 1: Write the proportion equation
   165,012.72 : 227,717.76 = 89,561.24 : x
2. Step 2: Convert to fraction form
   165,012.72/227,717.76 = 89,561.24/x
3. Step 3: Cross multiply
   165,012.72x = 227,717.76 × 89,561.24
4. Step 4: Simplify right side
   165,012.72x = 20,394,684,955.62
5. Step 5: Solve for x
   x = 20,394,684,955.62/165,012.72
6. Step 6: Final answer
   x = 123,594.62