Finding the Fourth Proportional to 90.42, 135.59 and 41.63

Step by Step Solution

1. Step 1: Write the proportion equation
   90.42 : 135.59 = 41.63 : x
2. Step 2: Convert to fraction form
   90.42/135.59 = 41.63/x
3. Step 3: Cross multiply
   90.42x = 135.59 × 41.63
4. Step 4: Simplify right side
   90.42x = 5,644.32
5. Step 5: Solve for x
   x = 5,644.32/90.42
6. Step 6: Final answer
   x = 62.42