Finding the Fourth Proportional to 31,083.61, 42,895.70 and 16,936.69

Step by Step Solution

1. Step 1: Write the proportion equation
   31,083.61 : 42,895.70 = 16,936.69 : x
2. Step 2: Convert to fraction form
   31,083.61/42,895.70 = 16,936.69/x
3. Step 3: Cross multiply
   31,083.61x = 42,895.70 × 16,936.69
4. Step 4: Simplify right side
   31,083.61x = 726,511,173.23
5. Step 5: Solve for x
   x = 726,511,173.23/31,083.61
6. Step 6: Final answer
   x = 23,372.81