Finding the Fourth Proportional to 2,187,475,111.78, 3,281,358,956.91 and 769,202,802.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,187,475,111.78 : 3,281,358,956.91 = 769,202,802.50 : x
2. Step 2: Convert to fraction form
   2,187,475,111.78/3,281,358,956.91 = 769,202,802.50/x
3. Step 3: Cross multiply
   2,187,475,111.78x = 3,281,358,956.91 × 769,202,802.50
4. Step 4: Simplify right side
   2,187,475,111.78x = 2,524,030,505,663,648,768
5. Step 5: Solve for x
   x = 2,524,030,505,663,648,768/2,187,475,111.78
6. Step 6: Final answer
   x = 1,153,855,644.84