Finding the Fourth Proportional to 8,871,152,439.68, 12,242,287,112.64 and 4,910,920,242.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,871,152,439.68 : 12,242,287,112.64 = 4,910,920,242.56 : x
2. Step 2: Convert to fraction form
   8,871,152,439.68/12,242,287,112.64 = 4,910,920,242.56/x
3. Step 3: Cross multiply
   8,871,152,439.68x = 12,242,287,112.64 × 4,910,920,242.56
4. Step 4: Simplify right side
   8,871,152,439.68x = 60,120,895,596,695,191,552
5. Step 5: Solve for x
   x = 60,120,895,596,695,191,552/8,871,152,439.68
6. Step 6: Final answer
   x = 6,777,123,491.62