Finding the Fourth Proportional to 42.76, 58.86 and 35.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42.76 : 58.86 = 35.50 : x
2. Step 2: Convert to fraction form
   42.76/58.86 = 35.50/x
3. Step 3: Cross multiply
   42.76x = 58.86 × 35.50
4. Step 4: Simplify right side
   42.76x = 2,089.53
5. Step 5: Solve for x
   x = 2,089.53/42.76
6. Step 6: Final answer
   x = 48.87