Finding the Fourth Proportional to 2,084,432,612.72, 3,126,749,477.66 and 685,385,910.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,084,432,612.72 : 3,126,749,477.66 = 685,385,910.50 : x
2. Step 2: Convert to fraction form
   2,084,432,612.72/3,126,749,477.66 = 685,385,910.50/x
3. Step 3: Cross multiply
   2,084,432,612.72x = 3,126,749,477.66 × 685,385,910.50
4. Step 4: Simplify right side
   2,084,432,612.72x = 2,143,030,037,632,337,920
5. Step 5: Solve for x
   x = 2,143,030,037,632,337,920/2,084,432,612.72
6. Step 6: Final answer
   x = 1,028,111,930.58