Finding the Fourth Proportional to 90.18, 124.29 and 62.46

Step by Step Solution

1. Step 1: Write the proportion equation
   90.18 : 124.29 = 62.46 : x
2. Step 2: Convert to fraction form
   90.18/124.29 = 62.46/x
3. Step 3: Cross multiply
   90.18x = 124.29 × 62.46
4. Step 4: Simplify right side
   90.18x = 7,763.15
5. Step 5: Solve for x
   x = 7,763.15/90.18
6. Step 6: Final answer
   x = 86.09