Finding the Fourth Proportional to 31,042.88, 42,839.20 and 16,895.82

Step by Step Solution

1. Step 1: Write the proportion equation
   31,042.88 : 42,839.20 = 16,895.82 : x
2. Step 2: Convert to fraction form
   31,042.88/42,839.20 = 16,895.82/x
3. Step 3: Cross multiply
   31,042.88x = 42,839.20 × 16,895.82
4. Step 4: Simplify right side
   31,042.88x = 723,803,412.14
5. Step 5: Solve for x
   x = 723,803,412.14/31,042.88
6. Step 6: Final answer
   x = 23,316.25