Finding the Fourth Proportional to 111.48, 167.23 and 53.69

Step by Step Solution

1. Step 1: Write the proportion equation
   111.48 : 167.23 = 53.69 : x
2. Step 2: Convert to fraction form
   111.48/167.23 = 53.69/x
3. Step 3: Cross multiply
   111.48x = 167.23 × 53.69
4. Step 4: Simplify right side
   111.48x = 8,978.92
5. Step 5: Solve for x
   x = 8,978.92/111.48
6. Step 6: Final answer
   x = 80.54