Finding the Fourth Proportional to 43.02, 59.22 and 42.18

Step by Step Solution

1. Step 1: Write the proportion equation
   43.02 : 59.22 = 42.18 : x
2. Step 2: Convert to fraction form
   43.02/59.22 = 42.18/x
3. Step 3: Cross multiply
   43.02x = 59.22 × 42.18
4. Step 4: Simplify right side
   43.02x = 2,497.90
5. Step 5: Solve for x
   x = 2,497.90/43.02
6. Step 6: Final answer
   x = 58.06