Finding the Fourth Proportional to 111.69, 153 and 110.16

Step by Step Solution

1. Step 1: Write the proportion equation
   111.69 : 153 = 110.16 : x
2. Step 2: Convert to fraction form
   111.69/153 = 110.16/x
3. Step 3: Cross multiply
   111.69x = 153 × 110.16
4. Step 4: Simplify right side
   111.69x = 16,854.48
5. Step 5: Solve for x
   x = 16,854.48/111.69
6. Step 6: Final answer
   x = 150.90