Finding the Fourth Proportional to 108.47, 162.61 and 67.23

Step by Step Solution

1. Step 1: Write the proportion equation
   108.47 : 162.61 = 67.23 : x
2. Step 2: Convert to fraction form
   108.47/162.61 = 67.23/x
3. Step 3: Cross multiply
   108.47x = 162.61 × 67.23
4. Step 4: Simplify right side
   108.47x = 10,932.10
5. Step 5: Solve for x
   x = 10,932.10/108.47
6. Step 6: Final answer
   x = 100.78