Finding the Fourth Proportional to 42,019.20, 57,986.72 and 23,157.44

Step by Step Solution

1. Step 1: Write the proportion equation
   42,019.20 : 57,986.72 = 23,157.44 : x
2. Step 2: Convert to fraction form
   42,019.20/57,986.72 = 23,157.44/x
3. Step 3: Cross multiply
   42,019.20x = 57,986.72 × 23,157.44
4. Step 4: Simplify right side
   42,019.20x = 1,342,823,989.20
5. Step 5: Solve for x
   x = 1,342,823,989.20/42,019.20
6. Step 6: Final answer
   x = 31,957.39