Finding the Fourth Proportional to 42.42, 58.55 and 35.13

Step by Step Solution

1. Step 1: Write the proportion equation
   42.42 : 58.55 = 35.13 : x
2. Step 2: Convert to fraction form
   42.42/58.55 = 35.13/x
3. Step 3: Cross multiply
   42.42x = 58.55 × 35.13
4. Step 4: Simplify right side
   42.42x = 2,056.86
5. Step 5: Solve for x
   x = 2,056.86/42.42
6. Step 6: Final answer
   x = 48.49