Finding the Fourth Proportional to 30,676,958.72, 42,335,553.12 and 17,628,305.12

Step by Step Solution

1. Step 1: Write the proportion equation
   30,676,958.72 : 42,335,553.12 = 17,628,305.12 : x
2. Step 2: Convert to fraction form
   30,676,958.72/42,335,553.12 = 17,628,305.12/x
3. Step 3: Cross multiply
   30,676,958.72x = 42,335,553.12 × 17,628,305.12
4. Step 4: Simplify right side
   30,676,958.72x = 746,304,047,823,328
5. Step 5: Solve for x
   x = 746,304,047,823,328/30,676,958.72
6. Step 6: Final answer
   x = 24,327,836.88