Finding the Fourth Proportional to 90.25, 124.54 and 59.18

Step by Step Solution

1. Step 1: Write the proportion equation
   90.25 : 124.54 = 59.18 : x
2. Step 2: Convert to fraction form
   90.25/124.54 = 59.18/x
3. Step 3: Cross multiply
   90.25x = 124.54 × 59.18
4. Step 4: Simplify right side
   90.25x = 7,370.28
5. Step 5: Solve for x
   x = 7,370.28/90.25
6. Step 6: Final answer
   x = 81.67