Finding the Fourth Proportional to 112.47, 168.71 and 31.33

Step by Step Solution

1. Step 1: Write the proportion equation
   112.47 : 168.71 = 31.33 : x
2. Step 2: Convert to fraction form
   112.47/168.71 = 31.33/x
3. Step 3: Cross multiply
   112.47x = 168.71 × 31.33
4. Step 4: Simplify right side
   112.47x = 5,285.26
5. Step 5: Solve for x
   x = 5,285.26/112.47
6. Step 6: Final answer
   x = 46.99