Finding the Fourth Proportional to 109.24, 150.56 and 83.96

Step by Step Solution

1. Step 1: Write the proportion equation
   109.24 : 150.56 = 83.96 : x
2. Step 2: Convert to fraction form
   109.24/150.56 = 83.96/x
3. Step 3: Cross multiply
   109.24x = 150.56 × 83.96
4. Step 4: Simplify right side
   109.24x = 12,640.72
5. Step 5: Solve for x
   x = 12,640.72/109.24
6. Step 6: Final answer
   x = 115.72