Finding the Fourth Proportional to 162.69, 224.49 and 100.50

Step by Step Solution

1. Step 1: Write the proportion equation
   162.69 : 224.49 = 100.50 : x
2. Step 2: Convert to fraction form
   162.69/224.49 = 100.50/x
3. Step 3: Cross multiply
   162.69x = 224.49 × 100.50
4. Step 4: Simplify right side
   162.69x = 22,561.25
5. Step 5: Solve for x
   x = 22,561.25/162.69
6. Step 6: Final answer
   x = 138.68