Finding the Fourth Proportional to 30,876.66, 42,609.98 and 16,729.47

Step by Step Solution

1. Step 1: Write the proportion equation
   30,876.66 : 42,609.98 = 16,729.47 : x
2. Step 2: Convert to fraction form
   30,876.66/42,609.98 = 16,729.47/x
3. Step 3: Cross multiply
   30,876.66x = 42,609.98 × 16,729.47
4. Step 4: Simplify right side
   30,876.66x = 712,842,423.93
5. Step 5: Solve for x
   x = 712,842,423.93/30,876.66
6. Step 6: Final answer
   x = 23,086.77