Finding the Fourth Proportional to 25,456.68, 35,148.42 and 16,978.84

Step by Step Solution

1. Step 1: Write the proportion equation
   25,456.68 : 35,148.42 = 16,978.84 : x
2. Step 2: Convert to fraction form
   25,456.68/35,148.42 = 16,978.84/x
3. Step 3: Cross multiply
   25,456.68x = 35,148.42 × 16,978.84
4. Step 4: Simplify right side
   25,456.68x = 596,779,399.43
5. Step 5: Solve for x
   x = 596,779,399.43/25,456.68
6. Step 6: Final answer
   x = 23,442.94