Finding the Fourth Proportional to 31,055.83, 42,855.61 and 16,908.63

Step by Step Solution

1. Step 1: Write the proportion equation
   31,055.83 : 42,855.61 = 16,908.63 : x
2. Step 2: Convert to fraction form
   31,055.83/42,855.61 = 16,908.63/x
3. Step 3: Cross multiply
   31,055.83x = 42,855.61 × 16,908.63
4. Step 4: Simplify right side
   31,055.83x = 724,629,652.91
5. Step 5: Solve for x
   x = 724,629,652.91/31,055.83
6. Step 6: Final answer
   x = 23,333.13