Finding the Fourth Proportional to 30,535.94, 42,140.80 and 17,107.30

Step by Step Solution

1. Step 1: Write the proportion equation
   30,535.94 : 42,140.80 = 17,107.30 : x
2. Step 2: Convert to fraction form
   30,535.94/42,140.80 = 17,107.30/x
3. Step 3: Cross multiply
   30,535.94x = 42,140.80 × 17,107.30
4. Step 4: Simplify right side
   30,535.94x = 720,915,159.72
5. Step 5: Solve for x
   x = 720,915,159.72/30,535.94
6. Step 6: Final answer
   x = 23,608.75