Finding the Fourth Proportional to 111.54, 167.37 and 106.38

Step by Step Solution

1. Step 1: Write the proportion equation
   111.54 : 167.37 = 106.38 : x
2. Step 2: Convert to fraction form
   111.54/167.37 = 106.38/x
3. Step 3: Cross multiply
   111.54x = 167.37 × 106.38
4. Step 4: Simplify right side
   111.54x = 17,804.82
5. Step 5: Solve for x
   x = 17,804.82/111.54
6. Step 6: Final answer
   x = 159.63