Finding the Fourth Proportional to 90.24, 124.42 and 59.11

Step by Step Solution

1. Step 1: Write the proportion equation
   90.24 : 124.42 = 59.11 : x
2. Step 2: Convert to fraction form
   90.24/124.42 = 59.11/x
3. Step 3: Cross multiply
   90.24x = 124.42 × 59.11
4. Step 4: Simplify right side
   90.24x = 7,354.47
5. Step 5: Solve for x
   x = 7,354.47/90.24
6. Step 6: Final answer
   x = 81.50