Finding the Fourth Proportional to 30,684.56, 42,344.06 and 17,072.30

Step by Step Solution

1. Step 1: Write the proportion equation
   30,684.56 : 42,344.06 = 17,072.30 : x
2. Step 2: Convert to fraction form
   30,684.56/42,344.06 = 17,072.30/x
3. Step 3: Cross multiply
   30,684.56x = 42,344.06 × 17,072.30
4. Step 4: Simplify right side
   30,684.56x = 722,910,495.54
5. Step 5: Solve for x
   x = 722,910,495.54/30,684.56
6. Step 6: Final answer
   x = 23,559.42