Finding the Fourth Proportional to 30,942.86, 42,702.12 and 17,513.87

Step by Step Solution

1. Step 1: Write the proportion equation
   30,942.86 : 42,702.12 = 17,513.87 : x
2. Step 2: Convert to fraction form
   30,942.86/42,702.12 = 17,513.87/x
3. Step 3: Cross multiply
   30,942.86x = 42,702.12 × 17,513.87
4. Step 4: Simplify right side
   30,942.86x = 747,879,164.89
5. Step 5: Solve for x
   x = 747,879,164.89/30,942.86
6. Step 6: Final answer
   x = 24,169.69