Finding the Fourth Proportional to 31,878.38, 43,992.05 and 17,731.23

Step by Step Solution

1. Step 1: Write the proportion equation
   31,878.38 : 43,992.05 = 17,731.23 : x
2. Step 2: Convert to fraction form
   31,878.38/43,992.05 = 17,731.23/x
3. Step 3: Cross multiply
   31,878.38x = 43,992.05 × 17,731.23
4. Step 4: Simplify right side
   31,878.38x = 780,032,969.59
5. Step 5: Solve for x
   x = 780,032,969.59/31,878.38
6. Step 6: Final answer
   x = 24,469.03