Finding the Fourth Proportional to 30,872.67, 42,604.25 and 16,725.57

Step by Step Solution

1. Step 1: Write the proportion equation
   30,872.67 : 42,604.25 = 16,725.57 : x
2. Step 2: Convert to fraction form
   30,872.67/42,604.25 = 16,725.57/x
3. Step 3: Cross multiply
   30,872.67x = 42,604.25 × 16,725.57
4. Step 4: Simplify right side
   30,872.67x = 712,580,282.04
5. Step 5: Solve for x
   x = 712,580,282.04/30,872.67
6. Step 6: Final answer
   x = 23,081.27