Finding the Fourth Proportional to 162.69, 224.50 and 89.00

Step by Step Solution

1. Step 1: Write the proportion equation
   162.69 : 224.50 = 89.00 : x
2. Step 2: Convert to fraction form
   162.69/224.50 = 89.00/x
3. Step 3: Cross multiply
   162.69x = 224.50 × 89.00
4. Step 4: Simplify right side
   162.69x = 19,981.37
5. Step 5: Solve for x
   x = 19,981.37/162.69
6. Step 6: Final answer
   x = 122.82