Finding the Fourth Proportional to 31,141.58, 42,976.42 and 16,995.20

Step by Step Solution

1. Step 1: Write the proportion equation
   31,141.58 : 42,976.42 = 16,995.20 : x
2. Step 2: Convert to fraction form
   31,141.58/42,976.42 = 16,995.20/x
3. Step 3: Cross multiply
   31,141.58x = 42,976.42 × 16,995.20
4. Step 4: Simplify right side
   31,141.58x = 730,392,853.18
5. Step 5: Solve for x
   x = 730,392,853.18/31,141.58
6. Step 6: Final answer
   x = 23,453.94