Finding the Fourth Proportional to 30,919.86, 42,669.42 and 17,490.83

Step by Step Solution

1. Step 1: Write the proportion equation
   30,919.86 : 42,669.42 = 17,490.83 : x
2. Step 2: Convert to fraction form
   30,919.86/42,669.42 = 17,490.83/x
3. Step 3: Cross multiply
   30,919.86x = 42,669.42 × 17,490.83
4. Step 4: Simplify right side
   30,919.86x = 746,323,270.62
5. Step 5: Solve for x
   x = 746,323,270.62/30,919.86
6. Step 6: Final answer
   x = 24,137.35