Finding the Fourth Proportional to 30,876.91, 42,610.17 and 16,729.76

Step by Step Solution

1. Step 1: Write the proportion equation
   30,876.91 : 42,610.17 = 16,729.76 : x
2. Step 2: Convert to fraction form
   30,876.91/42,610.17 = 16,729.76/x
3. Step 3: Cross multiply
   30,876.91x = 42,610.17 × 16,729.76
4. Step 4: Simplify right side
   30,876.91x = 712,857,641.87
5. Step 5: Solve for x
   x = 712,857,641.87/30,876.91
6. Step 6: Final answer
   x = 23,087.08