Finding the Fourth Proportional to 30,614.91, 42,268.49 and 18,685.16

Step by Step Solution

1. Step 1: Write the proportion equation
   30,614.91 : 42,268.49 = 18,685.16 : x
2. Step 2: Convert to fraction form
   30,614.91/42,268.49 = 18,685.16/x
3. Step 3: Cross multiply
   30,614.91x = 42,268.49 × 18,685.16
4. Step 4: Simplify right side
   30,614.91x = 789,793,527.52
5. Step 5: Solve for x
   x = 789,793,527.52/30,614.91
6. Step 6: Final answer
   x = 25,797.68