Finding the Fourth Proportional to 30,409.31, 41,959.84 and 16,978.41

Step by Step Solution

1. Step 1: Write the proportion equation
   30,409.31 : 41,959.84 = 16,978.41 : x
2. Step 2: Convert to fraction form
   30,409.31/41,959.84 = 16,978.41/x
3. Step 3: Cross multiply
   30,409.31x = 41,959.84 × 16,978.41
4. Step 4: Simplify right side
   30,409.31x = 712,411,367.05
5. Step 5: Solve for x
   x = 712,411,367.05/30,409.31
6. Step 6: Final answer
   x = 23,427.41