Finding the Fourth Proportional to 162.83, 224.69 and 89.15

Step by Step Solution

1. Step 1: Write the proportion equation
   162.83 : 224.69 = 89.15 : x
2. Step 2: Convert to fraction form
   162.83/224.69 = 89.15/x
3. Step 3: Cross multiply
   162.83x = 224.69 × 89.15
4. Step 4: Simplify right side
   162.83x = 20,031.90
5. Step 5: Solve for x
   x = 20,031.90/162.83
6. Step 6: Final answer
   x = 123.02