Finding the Fourth Proportional to 12,968,945,219.80, 17,905,929,853.50 and 8,215,439,406.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,968,945,219.80 : 17,905,929,853.50 = 8,215,439,406.04 : x
2. Step 2: Convert to fraction form
   12,968,945,219.80/17,905,929,853.50 = 8,215,439,406.04/x
3. Step 3: Cross multiply
   12,968,945,219.80x = 17,905,929,853.50 × 8,215,439,406.04
4. Step 4: Simplify right side
   12,968,945,219.80x = 147,105,081,720,231,936,000
5. Step 5: Solve for x
   x = 147,105,081,720,231,936,000/12,968,945,219.80
6. Step 6: Final answer
   x = 11,342,871,700.59