Finding the Fourth Proportional to 30,876.69, 42,611.69 and 17,447.63

Step by Step Solution

1. Step 1: Write the proportion equation
   30,876.69 : 42,611.69 = 17,447.63 : x
2. Step 2: Convert to fraction form
   30,876.69/42,611.69 = 17,447.63/x
3. Step 3: Cross multiply
   30,876.69x = 42,611.69 × 17,447.63
4. Step 4: Simplify right side
   30,876.69x = 743,472,913.56
5. Step 5: Solve for x
   x = 743,472,913.56/30,876.69
6. Step 6: Final answer
   x = 24,078.78