Finding the Fourth Proportional to 221,456.72, 332,301.72 and 96,885.20

Step by Step Solution

1. Step 1: Write the proportion equation
   221,456.72 : 332,301.72 = 96,885.20 : x
2. Step 2: Convert to fraction form
   221,456.72/332,301.72 = 96,885.20/x
3. Step 3: Cross multiply
   221,456.72x = 332,301.72 × 96,885.20
4. Step 4: Simplify right side
   221,456.72x = 32,195,118,602.54
5. Step 5: Solve for x
   x = 32,195,118,602.54/221,456.72
6. Step 6: Final answer
   x = 145,378.83