Finding the Fourth Proportional to 108.42, 162.61 and 31.37

Step by Step Solution

1. Step 1: Write the proportion equation
   108.42 : 162.61 = 31.37 : x
2. Step 2: Convert to fraction form
   108.42/162.61 = 31.37/x
3. Step 3: Cross multiply
   108.42x = 162.61 × 31.37
4. Step 4: Simplify right side
   108.42x = 5,100.11
5. Step 5: Solve for x
   x = 5,100.11/108.42
6. Step 6: Final answer
   x = 47.04