Finding the Fourth Proportional to 31,055.98, 42,857.50 and 16,908.82

Step by Step Solution

1. Step 1: Write the proportion equation
   31,055.98 : 42,857.50 = 16,908.82 : x
2. Step 2: Convert to fraction form
   31,055.98/42,857.50 = 16,908.82/x
3. Step 3: Cross multiply
   31,055.98x = 42,857.50 × 16,908.82
4. Step 4: Simplify right side
   31,055.98x = 724,669,753.15
5. Step 5: Solve for x
   x = 724,669,753.15/31,055.98
6. Step 6: Final answer
   x = 23,334.31