Finding the Fourth Proportional to 111.48, 167.37 and 109.10

Step by Step Solution

1. Step 1: Write the proportion equation
   111.48 : 167.37 = 109.10 : x
2. Step 2: Convert to fraction form
   111.48/167.37 = 109.10/x
3. Step 3: Cross multiply
   111.48x = 167.37 × 109.10
4. Step 4: Simplify right side
   111.48x = 18,259.13
5. Step 5: Solve for x
   x = 18,259.13/111.48
6. Step 6: Final answer
   x = 163.79