Finding the Fourth Proportional to 111.69, 167.31 and 73.08

Step by Step Solution

1. Step 1: Write the proportion equation
   111.69 : 167.31 = 73.08 : x
2. Step 2: Convert to fraction form
   111.69/167.31 = 73.08/x
3. Step 3: Cross multiply
   111.69x = 167.31 × 73.08
4. Step 4: Simplify right side
   111.69x = 12,227.01
5. Step 5: Solve for x
   x = 12,227.01/111.69
6. Step 6: Final answer
   x = 109.47