Finding the Fourth Proportional to 111.93, 168.22 and 103.77

Step by Step Solution

1. Step 1: Write the proportion equation
   111.93 : 168.22 = 103.77 : x
2. Step 2: Convert to fraction form
   111.93/168.22 = 103.77/x
3. Step 3: Cross multiply
   111.93x = 168.22 × 103.77
4. Step 4: Simplify right side
   111.93x = 17,456.19
5. Step 5: Solve for x
   x = 17,456.19/111.93
6. Step 6: Final answer
   x = 155.96