Finding the Fourth Proportional to 30,685.07, 42,344.99 and 17,256.32

Step by Step Solution

1. Step 1: Write the proportion equation
   30,685.07 : 42,344.99 = 17,256.32 : x
2. Step 2: Convert to fraction form
   30,685.07/42,344.99 = 17,256.32/x
3. Step 3: Cross multiply
   30,685.07x = 42,344.99 × 17,256.32
4. Step 4: Simplify right side
   30,685.07x = 730,718,399.83
5. Step 5: Solve for x
   x = 730,718,399.83/30,685.07
6. Step 6: Final answer
   x = 23,813.49