Finding the Fourth Proportional to 31,116.94, 42,942.89 and 17,509.23

Step by Step Solution

1. Step 1: Write the proportion equation
   31,116.94 : 42,942.89 = 17,509.23 : x
2. Step 2: Convert to fraction form
   31,116.94/42,942.89 = 17,509.23/x
3. Step 3: Cross multiply
   31,116.94x = 42,942.89 × 17,509.23
4. Step 4: Simplify right side
   31,116.94x = 751,896,981.65
5. Step 5: Solve for x
   x = 751,896,981.65/31,116.94
6. Step 6: Final answer
   x = 24,163.59