Finding the Fourth Proportional to 3,578,404,557.78, 5,365,810,668.15 and 2,084,919,520.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,578,404,557.78 : 5,365,810,668.15 = 2,084,919,520.50 : x
2. Step 2: Convert to fraction form
   3,578,404,557.78/5,365,810,668.15 = 2,084,919,520.50/x
3. Step 3: Cross multiply
   3,578,404,557.78x = 5,365,810,668.15 × 2,084,919,520.50
4. Step 4: Simplify right side
   3,578,404,557.78x = 11,187,283,405,333,082,112
5. Step 5: Solve for x
   x = 11,187,283,405,333,082,112/3,578,404,557.78
6. Step 6: Final answer
   x = 3,126,332,762.18