Finding the Fourth Proportional to 59.05, 81.55 and 48.79

Step by Step Solution

1. Step 1: Write the proportion equation
   59.05 : 81.55 = 48.79 : x
2. Step 2: Convert to fraction form
   59.05/81.55 = 48.79/x
3. Step 3: Cross multiply
   59.05x = 81.55 × 48.79
4. Step 4: Simplify right side
   59.05x = 3,978.82
5. Step 5: Solve for x
   x = 3,978.82/59.05
6. Step 6: Final answer
   x = 67.38