Finding the Fourth Proportional to 132.72, 182.78 and 109.49

Step by Step Solution

1. Step 1: Write the proportion equation
   132.72 : 182.78 = 109.49 : x
2. Step 2: Convert to fraction form
   132.72/182.78 = 109.49/x
3. Step 3: Cross multiply
   132.72x = 182.78 × 109.49
4. Step 4: Simplify right side
   132.72x = 20,012.58
5. Step 5: Solve for x
   x = 20,012.58/132.72
6. Step 6: Final answer
   x = 150.79