Finding the Fourth Proportional to 30,934.82, 42,690.15 and 16,787.66

Step by Step Solution

1. Step 1: Write the proportion equation
   30,934.82 : 42,690.15 = 16,787.66 : x
2. Step 2: Convert to fraction form
   30,934.82/42,690.15 = 16,787.66/x
3. Step 3: Cross multiply
   30,934.82x = 42,690.15 × 16,787.66
4. Step 4: Simplify right side
   30,934.82x = 716,667,510.10
5. Step 5: Solve for x
   x = 716,667,510.10/30,934.82
6. Step 6: Final answer
   x = 23,167.02