Finding the Fourth Proportional to 30,469.28, 42,047.16 and 17,040.42

Step by Step Solution

1. Step 1: Write the proportion equation
   30,469.28 : 42,047.16 = 17,040.42 : x
2. Step 2: Convert to fraction form
   30,469.28/42,047.16 = 17,040.42/x
3. Step 3: Cross multiply
   30,469.28x = 42,047.16 × 17,040.42
4. Step 4: Simplify right side
   30,469.28x = 716,501,266.21
5. Step 5: Solve for x
   x = 716,501,266.21/30,469.28
6. Step 6: Final answer
   x = 23,515.53