Finding the Fourth Proportional to 111.73, 167.52 and 73.18

Step by Step Solution

1. Step 1: Write the proportion equation
   111.73 : 167.52 = 73.18 : x
2. Step 2: Convert to fraction form
   111.73/167.52 = 73.18/x
3. Step 3: Cross multiply
   111.73x = 167.52 × 73.18
4. Step 4: Simplify right side
   111.73x = 12,259.11
5. Step 5: Solve for x
   x = 12,259.11/111.73
6. Step 6: Final answer
   x = 109.72