Finding the Fourth Proportional to 30,945.35, 42,704.55 and 16,798.20

Step by Step Solution

1. Step 1: Write the proportion equation
   30,945.35 : 42,704.55 = 16,798.20 : x
2. Step 2: Convert to fraction form
   30,945.35/42,704.55 = 16,798.20/x
3. Step 3: Cross multiply
   30,945.35x = 42,704.55 × 16,798.20
4. Step 4: Simplify right side
   30,945.35x = 717,359,411.67
5. Step 5: Solve for x
   x = 717,359,411.67/30,945.35
6. Step 6: Final answer
   x = 23,181.49