Finding the Fourth Proportional to 47.94, 71.83 and 42.51

Step by Step Solution

1. Step 1: Write the proportion equation
   47.94 : 71.83 = 42.51 : x
2. Step 2: Convert to fraction form
   47.94/71.83 = 42.51/x
3. Step 3: Cross multiply
   47.94x = 71.83 × 42.51
4. Step 4: Simplify right side
   47.94x = 3,053.49
5. Step 5: Solve for x
   x = 3,053.49/47.94
6. Step 6: Final answer
   x = 63.69