Finding the Fourth Proportional to 111.04, 152.22 and 109.16

Step by Step Solution

1. Step 1: Write the proportion equation
   111.04 : 152.22 = 109.16 : x
2. Step 2: Convert to fraction form
   111.04/152.22 = 109.16/x
3. Step 3: Cross multiply
   111.04x = 152.22 × 109.16
4. Step 4: Simplify right side
   111.04x = 16,616.34
5. Step 5: Solve for x
   x = 16,616.34/111.04
6. Step 6: Final answer
   x = 149.64