Finding the Fourth Proportional to 30,831.71, 42,547.88 and 17,403.12

Step by Step Solution

1. Step 1: Write the proportion equation
   30,831.71 : 42,547.88 = 17,403.12 : x
2. Step 2: Convert to fraction form
   30,831.71/42,547.88 = 17,403.12/x
3. Step 3: Cross multiply
   30,831.71x = 42,547.88 × 17,403.12
4. Step 4: Simplify right side
   30,831.71x = 740,465,904.89
5. Step 5: Solve for x
   x = 740,465,904.89/30,831.71
6. Step 6: Final answer
   x = 24,016.38