Finding the Fourth Proportional to 90.46, 124.37 and 80.53

Step by Step Solution

1. Step 1: Write the proportion equation
   90.46 : 124.37 = 80.53 : x
2. Step 2: Convert to fraction form
   90.46/124.37 = 80.53/x
3. Step 3: Cross multiply
   90.46x = 124.37 × 80.53
4. Step 4: Simplify right side
   90.46x = 10,014.72
5. Step 5: Solve for x
   x = 10,014.72/90.46
6. Step 6: Final answer
   x = 110.71