Finding the Fourth Proportional to 30,863.47, 42,591.48 and 16,716.28

Step by Step Solution

1. Step 1: Write the proportion equation
   30,863.47 : 42,591.48 = 16,716.28 : x
2. Step 2: Convert to fraction form
   30,863.47/42,591.48 = 16,716.28/x
3. Step 3: Cross multiply
   30,863.47x = 42,591.48 × 16,716.28
4. Step 4: Simplify right side
   30,863.47x = 711,971,105.29
5. Step 5: Solve for x
   x = 711,971,105.29/30,863.47
6. Step 6: Final answer
   x = 23,068.41