Finding the Fourth Proportional to 31,079.89, 42,891.08 and 16,933.65

Step by Step Solution

1. Step 1: Write the proportion equation
   31,079.89 : 42,891.08 = 16,933.65 : x
2. Step 2: Convert to fraction form
   31,079.89/42,891.08 = 16,933.65/x
3. Step 3: Cross multiply
   31,079.89x = 42,891.08 × 16,933.65
4. Step 4: Simplify right side
   31,079.89x = 726,302,364.72
5. Step 5: Solve for x
   x = 726,302,364.72/31,079.89
6. Step 6: Final answer
   x = 23,368.88