Finding the Fourth Proportional to 31,055.82, 42,857.13 and 16,908.75

Step by Step Solution

1. Step 1: Write the proportion equation
   31,055.82 : 42,857.13 = 16,908.75 : x
2. Step 2: Convert to fraction form
   31,055.82/42,857.13 = 16,908.75/x
3. Step 3: Cross multiply
   31,055.82x = 42,857.13 × 16,908.75
4. Step 4: Simplify right side
   31,055.82x = 724,660,496.89
5. Step 5: Solve for x
   x = 724,660,496.89/31,055.82
6. Step 6: Final answer
   x = 23,334.13