Finding the Fourth Proportional to 111.97, 168.03 and 73.43

Step by Step Solution

1. Step 1: Write the proportion equation
   111.97 : 168.03 = 73.43 : x
2. Step 2: Convert to fraction form
   111.97/168.03 = 73.43/x
3. Step 3: Cross multiply
   111.97x = 168.03 × 73.43
4. Step 4: Simplify right side
   111.97x = 12,338.86
5. Step 5: Solve for x
   x = 12,338.86/111.97
6. Step 6: Final answer
   x = 110.20