Finding the Fourth Proportional to 31,109.88, 42,930.70 and 16,963

Step by Step Solution

1. Step 1: Write the proportion equation
   31,109.88 : 42,930.70 = 16,963 : x
2. Step 2: Convert to fraction form
   31,109.88/42,930.70 = 16,963/x
3. Step 3: Cross multiply
   31,109.88x = 42,930.70 × 16,963
4. Step 4: Simplify right side
   31,109.88x = 728,233,464.10
5. Step 5: Solve for x
   x = 728,233,464.10/31,109.88
6. Step 6: Final answer
   x = 23,408.43