Finding the Fourth Proportional to 30,976.45, 42,748.01 and 16,829.30

Step by Step Solution

1. Step 1: Write the proportion equation
   30,976.45 : 42,748.01 = 16,829.30 : x
2. Step 2: Convert to fraction form
   30,976.45/42,748.01 = 16,829.30/x
3. Step 3: Cross multiply
   30,976.45x = 42,748.01 × 16,829.30
4. Step 4: Simplify right side
   30,976.45x = 719,419,084.69
5. Step 5: Solve for x
   x = 719,419,084.69/30,976.45
6. Step 6: Final answer
   x = 23,224.71