Finding the Fourth Proportional to 31,111.38, 42,933.06 and 16,964.37

Step by Step Solution

1. Step 1: Write the proportion equation
   31,111.38 : 42,933.06 = 16,964.37 : x
2. Step 2: Convert to fraction form
   31,111.38/42,933.06 = 16,964.37/x
3. Step 3: Cross multiply
   31,111.38x = 42,933.06 × 16,964.37
4. Step 4: Simplify right side
   31,111.38x = 728,332,315.07
5. Step 5: Solve for x
   x = 728,332,315.07/31,111.38
6. Step 6: Final answer
   x = 23,410.48