Finding the Fourth Proportional to 31,142.96, 42,977.06 and 16,995.48

Step by Step Solution

1. Step 1: Write the proportion equation
   31,142.96 : 42,977.06 = 16,995.48 : x
2. Step 2: Convert to fraction form
   31,142.96/42,977.06 = 16,995.48/x
3. Step 3: Cross multiply
   31,142.96x = 42,977.06 × 16,995.48
4. Step 4: Simplify right side
   31,142.96x = 730,415,763.69
5. Step 5: Solve for x
   x = 730,415,763.69/31,142.96
6. Step 6: Final answer
   x = 23,453.64