Finding the Fourth Proportional to 48.27, 72.41 and 42.99

Step by Step Solution

1. Step 1: Write the proportion equation
   48.27 : 72.41 = 42.99 : x
2. Step 2: Convert to fraction form
   48.27/72.41 = 42.99/x
3. Step 3: Cross multiply
   48.27x = 72.41 × 42.99
4. Step 4: Simplify right side
   48.27x = 3,112.69
5. Step 5: Solve for x
   x = 3,112.69/48.27
6. Step 6: Final answer
   x = 64.49