Finding the Fourth Proportional to 42.34, 58.30 and 42.22

Step by Step Solution

1. Step 1: Write the proportion equation
   42.34 : 58.30 = 42.22 : x
2. Step 2: Convert to fraction form
   42.34/58.30 = 42.22/x
3. Step 3: Cross multiply
   42.34x = 58.30 × 42.22
4. Step 4: Simplify right side
   42.34x = 2,461.43
5. Step 5: Solve for x
   x = 2,461.43/42.34
6. Step 6: Final answer
   x = 58.13