Finding the Fourth Proportional to 8,931,663,408.81, 12,316,559,501.79 and 5,919,870,344.79

Step by Step Solution

1. Step 1: Write the proportion equation
   8,931,663,408.81 : 12,316,559,501.79 = 5,919,870,344.79 : x
2. Step 2: Convert to fraction form
   8,931,663,408.81/12,316,559,501.79 = 5,919,870,344.79/x
3. Step 3: Cross multiply
   8,931,663,408.81x = 12,316,559,501.79 × 5,919,870,344.79
4. Step 4: Simplify right side
   8,931,663,408.81x = 72,912,435,344,488,120,320
5. Step 5: Solve for x
   x = 72,912,435,344,488,120,320/8,931,663,408.81
6. Step 6: Final answer
   x = 8,163,365,770.43