Finding the Fourth Proportional to 31,142, 42,976.87 and 16,995.76

Step by Step Solution

1. Step 1: Write the proportion equation
   31,142 : 42,976.87 = 16,995.76 : x
2. Step 2: Convert to fraction form
   31,142/42,976.87 = 16,995.76/x
3. Step 3: Cross multiply
   31,142x = 42,976.87 × 16,995.76
4. Step 4: Simplify right side
   31,142x = 730,424,568.07
5. Step 5: Solve for x
   x = 730,424,568.07/31,142
6. Step 6: Final answer
   x = 23,454.65