Finding the Fourth Proportional to 31,142.88, 42,976.58 and 16,995.83

Step by Step Solution

1. Step 1: Write the proportion equation
   31,142.88 : 42,976.58 = 16,995.83 : x
2. Step 2: Convert to fraction form
   31,142.88/42,976.58 = 16,995.83/x
3. Step 3: Cross multiply
   31,142.88x = 42,976.58 × 16,995.83
4. Step 4: Simplify right side
   31,142.88x = 730,422,347.80
5. Step 5: Solve for x
   x = 730,422,347.80/31,142.88
6. Step 6: Final answer
   x = 23,453.91