Finding the Fourth Proportional to 72.96, 109.49 and 32.42

Step by Step Solution

1. Step 1: Write the proportion equation
   72.96 : 109.49 = 32.42 : x
2. Step 2: Convert to fraction form
   72.96/109.49 = 32.42/x
3. Step 3: Cross multiply
   72.96x = 109.49 × 32.42
4. Step 4: Simplify right side
   72.96x = 3,548.96
5. Step 5: Solve for x
   x = 3,548.96/72.96
6. Step 6: Final answer
   x = 48.64