Finding the Fourth Proportional to 42.42, 58.50 and 34.22

Step by Step Solution

1. Step 1: Write the proportion equation
   42.42 : 58.50 = 34.22 : x
2. Step 2: Convert to fraction form
   42.42/58.50 = 34.22/x
3. Step 3: Cross multiply
   42.42x = 58.50 × 34.22
4. Step 4: Simplify right side
   42.42x = 2,001.87
5. Step 5: Solve for x
   x = 2,001.87/42.42
6. Step 6: Final answer
   x = 47.19