Finding the Fourth Proportional to 30,682.17, 42,343.43 and 17,072.15

Step by Step Solution

1. Step 1: Write the proportion equation
   30,682.17 : 42,343.43 = 17,072.15 : x
2. Step 2: Convert to fraction form
   30,682.17/42,343.43 = 17,072.15/x
3. Step 3: Cross multiply
   30,682.17x = 42,343.43 × 17,072.15
4. Step 4: Simplify right side
   30,682.17x = 722,893,091.40
5. Step 5: Solve for x
   x = 722,893,091.40/30,682.17
6. Step 6: Final answer
   x = 23,560.69