Finding the Fourth Proportional to 42.94, 59.18 and 31.26

Step by Step Solution

1. Step 1: Write the proportion equation
   42.94 : 59.18 = 31.26 : x
2. Step 2: Convert to fraction form
   42.94/59.18 = 31.26/x
3. Step 3: Cross multiply
   42.94x = 59.18 × 31.26
4. Step 4: Simplify right side
   42.94x = 1,849.89
5. Step 5: Solve for x
   x = 1,849.89/42.94
6. Step 6: Final answer
   x = 43.08