Finding the Fourth Proportional to 100.50, 151.24 and 89.32

Step by Step Solution

1. Step 1: Write the proportion equation
   100.50 : 151.24 = 89.32 : x
2. Step 2: Convert to fraction form
   100.50/151.24 = 89.32/x
3. Step 3: Cross multiply
   100.50x = 151.24 × 89.32
4. Step 4: Simplify right side
   100.50x = 13,508.76
5. Step 5: Solve for x
   x = 13,508.76/100.50
6. Step 6: Final answer
   x = 134.42