Finding the Fourth Proportional to 31,042.84, 42,837.78 and 16,895.80

Step by Step Solution

1. Step 1: Write the proportion equation
   31,042.84 : 42,837.78 = 16,895.80 : x
2. Step 2: Convert to fraction form
   31,042.84/42,837.78 = 16,895.80/x
3. Step 3: Cross multiply
   31,042.84x = 42,837.78 × 16,895.80
4. Step 4: Simplify right side
   31,042.84x = 723,778,563.32
5. Step 5: Solve for x
   x = 723,778,563.32/31,042.84
6. Step 6: Final answer
   x = 23,315.48