Finding the Fourth Proportional to 31,133.94, 42,964.83 and 16,986.84

Step by Step Solution

1. Step 1: Write the proportion equation
   31,133.94 : 42,964.83 = 16,986.84 : x
2. Step 2: Convert to fraction form
   31,133.94/42,964.83 = 16,986.84/x
3. Step 3: Cross multiply
   31,133.94x = 42,964.83 × 16,986.84
4. Step 4: Simplify right side
   31,133.94x = 729,836,692.84
5. Step 5: Solve for x
   x = 729,836,692.84/31,133.94
6. Step 6: Final answer
   x = 23,441.84