Finding the Fourth Proportional to 72.85, 109.18 and 32.22

Step by Step Solution

1. Step 1: Write the proportion equation
   72.85 : 109.18 = 32.22 : x
2. Step 2: Convert to fraction form
   72.85/109.18 = 32.22/x
3. Step 3: Cross multiply
   72.85x = 109.18 × 32.22
4. Step 4: Simplify right side
   72.85x = 3,517.78
5. Step 5: Solve for x
   x = 3,517.78/72.85
6. Step 6: Final answer
   x = 48.29