Finding the Fourth Proportional to 11,871,499,817.15, 17,807,822,421.10 and 3,903,491,630.55

Step by Step Solution

1. Step 1: Write the proportion equation
   11,871,499,817.15 : 17,807,822,421.10 = 3,903,491,630.55 : x
2. Step 2: Convert to fraction form
   11,871,499,817.15/17,807,822,421.10 = 3,903,491,630.55/x
3. Step 3: Cross multiply
   11,871,499,817.15x = 17,807,822,421.10 × 3,903,491,630.55
4. Step 4: Simplify right side
   11,871,499,817.15x = 69,512,685,779,068,051,456
5. Step 5: Solve for x
   x = 69,512,685,779,068,051,456/11,871,499,817.15
6. Step 6: Final answer
   x = 5,855,425,754.93