Finding the Fourth Proportional to 111.50, 167.04 and 105.97

Step by Step Solution

1. Step 1: Write the proportion equation
   111.50 : 167.04 = 105.97 : x
2. Step 2: Convert to fraction form
   111.50/167.04 = 105.97/x
3. Step 3: Cross multiply
   111.50x = 167.04 × 105.97
4. Step 4: Simplify right side
   111.50x = 17,701.23
5. Step 5: Solve for x
   x = 17,701.23/111.50
6. Step 6: Final answer
   x = 158.76