Finding the Fourth Proportional to 42.71, 63.63 and 42.53

Step by Step Solution

1. Step 1: Write the proportion equation
   42.71 : 63.63 = 42.53 : x
2. Step 2: Convert to fraction form
   42.71/63.63 = 42.53/x
3. Step 3: Cross multiply
   42.71x = 63.63 × 42.53
4. Step 4: Simplify right side
   42.71x = 2,705.87
5. Step 5: Solve for x
   x = 2,705.87/42.71
6. Step 6: Final answer
   x = 63.36