Finding the Fourth Proportional to 111.45, 167.34 and 106.23

Step by Step Solution

1. Step 1: Write the proportion equation
   111.45 : 167.34 = 106.23 : x
2. Step 2: Convert to fraction form
   111.45/167.34 = 106.23/x
3. Step 3: Cross multiply
   111.45x = 167.34 × 106.23
4. Step 4: Simplify right side
   111.45x = 17,776.53
5. Step 5: Solve for x
   x = 17,776.53/111.45
6. Step 6: Final answer
   x = 159.50