Finding the Fourth Proportional to 30,762.88, 42,452.78 and 16,615.72

Step by Step Solution

1. Step 1: Write the proportion equation
   30,762.88 : 42,452.78 = 16,615.72 : x
2. Step 2: Convert to fraction form
   30,762.88/42,452.78 = 16,615.72/x
3. Step 3: Cross multiply
   30,762.88x = 42,452.78 × 16,615.72
4. Step 4: Simplify right side
   30,762.88x = 705,383,505.70
5. Step 5: Solve for x
   x = 705,383,505.70/30,762.88
6. Step 6: Final answer
   x = 22,929.70