Finding the Fourth Proportional to 43.78, 60.42 and 35.50

Step by Step Solution

1. Step 1: Write the proportion equation
   43.78 : 60.42 = 35.50 : x
2. Step 2: Convert to fraction form
   43.78/60.42 = 35.50/x
3. Step 3: Cross multiply
   43.78x = 60.42 × 35.50
4. Step 4: Simplify right side
   43.78x = 2,144.73
5. Step 5: Solve for x
   x = 2,144.73/43.78
6. Step 6: Final answer
   x = 48.99