Finding the Fourth Proportional to 57.63, 86.42 and 42.44

Step by Step Solution

1. Step 1: Write the proportion equation
   57.63 : 86.42 = 42.44 : x
2. Step 2: Convert to fraction form
   57.63/86.42 = 42.44/x
3. Step 3: Cross multiply
   57.63x = 86.42 × 42.44
4. Step 4: Simplify right side
   57.63x = 3,667.02
5. Step 5: Solve for x
   x = 3,667.02/57.63
6. Step 6: Final answer
   x = 63.63