Finding the Fourth Proportional to 30,406.69, 41,965.44 and 16,978.82

Step by Step Solution

1. Step 1: Write the proportion equation
   30,406.69 : 41,965.44 = 16,978.82 : x
2. Step 2: Convert to fraction form
   30,406.69/41,965.44 = 16,978.82/x
3. Step 3: Cross multiply
   30,406.69x = 41,965.44 × 16,978.82
4. Step 4: Simplify right side
   30,406.69x = 712,523,442.15
5. Step 5: Solve for x
   x = 712,523,442.15/30,406.69
6. Step 6: Final answer
   x = 23,433.12