Finding the Fourth Proportional to 111.37, 167.87 and 106.73

Step by Step Solution

1. Step 1: Write the proportion equation
   111.37 : 167.87 = 106.73 : x
2. Step 2: Convert to fraction form
   111.37/167.87 = 106.73/x
3. Step 3: Cross multiply
   111.37x = 167.87 × 106.73
4. Step 4: Simplify right side
   111.37x = 17,916.23
5. Step 5: Solve for x
   x = 17,916.23/111.37
6. Step 6: Final answer
   x = 160.88