Finding the Fourth Proportional to 2,638,609,931.84, 3,958,401,472.47 and 868,080,298.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,638,609,931.84 : 3,958,401,472.47 = 868,080,298.10 : x
2. Step 2: Convert to fraction form
   2,638,609,931.84/3,958,401,472.47 = 868,080,298.10/x
3. Step 3: Cross multiply
   2,638,609,931.84x = 3,958,401,472.47 × 868,080,298.10
4. Step 4: Simplify right side
   2,638,609,931.84x = 3,436,210,330,201,444,352
5. Step 5: Solve for x
   x = 3,436,210,330,201,444,352/2,638,609,931.84
6. Step 6: Final answer
   x = 1,302,280,526.10