Finding the Fourth Proportional to 109.24, 162.77 and 103.72

Step by Step Solution

1. Step 1: Write the proportion equation
   109.24 : 162.77 = 103.72 : x
2. Step 2: Convert to fraction form
   109.24/162.77 = 103.72/x
3. Step 3: Cross multiply
   109.24x = 162.77 × 103.72
4. Step 4: Simplify right side
   109.24x = 16,882.50
5. Step 5: Solve for x
   x = 16,882.50/109.24
6. Step 6: Final answer
   x = 154.55