Finding the Fourth Proportional to 162.43, 224.03 and 100.18

Step by Step Solution

1. Step 1: Write the proportion equation
   162.43 : 224.03 = 100.18 : x
2. Step 2: Convert to fraction form
   162.43/224.03 = 100.18/x
3. Step 3: Cross multiply
   162.43x = 224.03 × 100.18
4. Step 4: Simplify right side
   162.43x = 22,443.86
5. Step 5: Solve for x
   x = 22,443.86/162.43
6. Step 6: Final answer
   x = 138.18