Finding the Fourth Proportional to 72.77, 109.18 and 32.18

Step by Step Solution

1. Step 1: Write the proportion equation
   72.77 : 109.18 = 32.18 : x
2. Step 2: Convert to fraction form
   72.77/109.18 = 32.18/x
3. Step 3: Cross multiply
   72.77x = 109.18 × 32.18
4. Step 4: Simplify right side
   72.77x = 3,512.91
5. Step 5: Solve for x
   x = 3,512.91/72.77
6. Step 6: Final answer
   x = 48.28