Finding the Fourth Proportional to 108.34, 162.49 and 31.31

Step by Step Solution

1. Step 1: Write the proportion equation
   108.34 : 162.49 = 31.31 : x
2. Step 2: Convert to fraction form
   108.34/162.49 = 31.31/x
3. Step 3: Cross multiply
   108.34x = 162.49 × 31.31
4. Step 4: Simplify right side
   108.34x = 5,087.56
5. Step 5: Solve for x
   x = 5,087.56/108.34
6. Step 6: Final answer
   x = 46.96