Finding the Fourth Proportional to 111.83, 167.69 and 73.31

Step by Step Solution

1. Step 1: Write the proportion equation
   111.83 : 167.69 = 73.31 : x
2. Step 2: Convert to fraction form
   111.83/167.69 = 73.31/x
3. Step 3: Cross multiply
   111.83x = 167.69 × 73.31
4. Step 4: Simplify right side
   111.83x = 12,292.15
5. Step 5: Solve for x
   x = 12,292.15/111.83
6. Step 6: Final answer
   x = 109.92