Finding the Fourth Proportional to 31,042.63, 42,838.83 and 16,895.57

Step by Step Solution

1. Step 1: Write the proportion equation
   31,042.63 : 42,838.83 = 16,895.57 : x
2. Step 2: Convert to fraction form
   31,042.63/42,838.83 = 16,895.57/x
3. Step 3: Cross multiply
   31,042.63x = 42,838.83 × 16,895.57
4. Step 4: Simplify right side
   31,042.63x = 723,786,366.51
5. Step 5: Solve for x
   x = 723,786,366.51/31,042.63
6. Step 6: Final answer
   x = 23,315.89