Finding the Fourth Proportional to 30,787.30, 42,488.67 and 17,359.81

Step by Step Solution

1. Step 1: Write the proportion equation
   30,787.30 : 42,488.67 = 17,359.81 : x
2. Step 2: Convert to fraction form
   30,787.30/42,488.67 = 17,359.81/x
3. Step 3: Cross multiply
   30,787.30x = 42,488.67 × 17,359.81
4. Step 4: Simplify right side
   30,787.30x = 737,595,238.35
5. Step 5: Solve for x
   x = 737,595,238.35/30,787.30
6. Step 6: Final answer
   x = 23,957.78