Finding the Fourth Proportional to 112.29, 168.18 and 103.83

Step by Step Solution

1. Step 1: Write the proportion equation
   112.29 : 168.18 = 103.83 : x
2. Step 2: Convert to fraction form
   112.29/168.18 = 103.83/x
3. Step 3: Cross multiply
   112.29x = 168.18 × 103.83
4. Step 4: Simplify right side
   112.29x = 17,462.13
5. Step 5: Solve for x
   x = 17,462.13/112.29
6. Step 6: Final answer
   x = 155.51