Finding the Fourth Proportional to 112.33, 167.22 and 111.72

Step by Step Solution

1. Step 1: Write the proportion equation
   112.33 : 167.22 = 111.72 : x
2. Step 2: Convert to fraction form
   112.33/167.22 = 111.72/x
3. Step 3: Cross multiply
   112.33x = 167.22 × 111.72
4. Step 4: Simplify right side
   112.33x = 18,681.82
5. Step 5: Solve for x
   x = 18,681.82/112.33
6. Step 6: Final answer
   x = 166.32