Finding the Fourth Proportional to 31,081.95, 42,893.41 and 16,934.79

Step by Step Solution

1. Step 1: Write the proportion equation
   31,081.95 : 42,893.41 = 16,934.79 : x
2. Step 2: Convert to fraction form
   31,081.95/42,893.41 = 16,934.79/x
3. Step 3: Cross multiply
   31,081.95x = 42,893.41 × 16,934.79
4. Step 4: Simplify right side
   31,081.95x = 726,390,890.73
5. Step 5: Solve for x
   x = 726,390,890.73/31,081.95
6. Step 6: Final answer
   x = 23,370.18