Finding the Fourth Proportional to 30,653.48, 42,301.76 and 17,915.42

Step by Step Solution

1. Step 1: Write the proportion equation
   30,653.48 : 42,301.76 = 17,915.42 : x
2. Step 2: Convert to fraction form
   30,653.48/42,301.76 = 17,915.42/x
3. Step 3: Cross multiply
   30,653.48x = 42,301.76 × 17,915.42
4. Step 4: Simplify right side
   30,653.48x = 757,853,797.14
5. Step 5: Solve for x
   x = 757,853,797.14/30,653.48
6. Step 6: Final answer
   x = 24,723.25