Finding the Fourth Proportional to 47.94, 71.94 and 42.53

Step by Step Solution

1. Step 1: Write the proportion equation
   47.94 : 71.94 = 42.53 : x
2. Step 2: Convert to fraction form
   47.94/71.94 = 42.53/x
3. Step 3: Cross multiply
   47.94x = 71.94 × 42.53
4. Step 4: Simplify right side
   47.94x = 3,059.17
5. Step 5: Solve for x
   x = 3,059.17/47.94
6. Step 6: Final answer
   x = 63.81