Finding the Fourth Proportional to 42.53, 58.78 and 35.61

Step by Step Solution

1. Step 1: Write the proportion equation
   42.53 : 58.78 = 35.61 : x
2. Step 2: Convert to fraction form
   42.53/58.78 = 35.61/x
3. Step 3: Cross multiply
   42.53x = 58.78 × 35.61
4. Step 4: Simplify right side
   42.53x = 2,093.28
5. Step 5: Solve for x
   x = 2,093.28/42.53
6. Step 6: Final answer
   x = 49.22