Finding the Fourth Proportional to 72.79, 109.11 and 32.18

Step by Step Solution

1. Step 1: Write the proportion equation
   72.79 : 109.11 = 32.18 : x
2. Step 2: Convert to fraction form
   72.79/109.11 = 32.18/x
3. Step 3: Cross multiply
   72.79x = 109.11 × 32.18
4. Step 4: Simplify right side
   72.79x = 3,510.73
5. Step 5: Solve for x
   x = 3,510.73/72.79
6. Step 6: Final answer
   x = 48.23