Finding the Fourth Proportional to 162.89, 224.77 and 100.73

Step by Step Solution

1. Step 1: Write the proportion equation
   162.89 : 224.77 = 100.73 : x
2. Step 2: Convert to fraction form
   162.89/224.77 = 100.73/x
3. Step 3: Cross multiply
   162.89x = 224.77 × 100.73
4. Step 4: Simplify right side
   162.89x = 22,639.71
5. Step 5: Solve for x
   x = 22,639.71/162.89
6. Step 6: Final answer
   x = 138.99