Finding the Fourth Proportional to 90.26, 124.50 and 59.18

Step by Step Solution

1. Step 1: Write the proportion equation
   90.26 : 124.50 = 59.18 : x
2. Step 2: Convert to fraction form
   90.26/124.50 = 59.18/x
3. Step 3: Cross multiply
   90.26x = 124.50 × 59.18
4. Step 4: Simplify right side
   90.26x = 7,367.91
5. Step 5: Solve for x
   x = 7,367.91/90.26
6. Step 6: Final answer
   x = 81.63