Finding the Fourth Proportional to 215,614.24, 323,483.76 and 89,231.15

Step by Step Solution

1. Step 1: Write the proportion equation
   215,614.24 : 323,483.76 = 89,231.15 : x
2. Step 2: Convert to fraction form
   215,614.24/323,483.76 = 89,231.15/x
3. Step 3: Cross multiply
   215,614.24x = 323,483.76 × 89,231.15
4. Step 4: Simplify right side
   215,614.24x = 28,864,828,719.83
5. Step 5: Solve for x
   x = 28,864,828,719.83/215,614.24
6. Step 6: Final answer
   x = 133,872.55