Finding the Fourth Proportional to 864,825,514.72, 1,299,307,786.75 and 554,541,048.05

Step by Step Solution

1. Step 1: Write the proportion equation
   864,825,514.72 : 1,299,307,786.75 = 554,541,048.05 : x
2. Step 2: Convert to fraction form
   864,825,514.72/1,299,307,786.75 = 554,541,048.05/x
3. Step 3: Cross multiply
   864,825,514.72x = 1,299,307,786.75 × 554,541,048.05
4. Step 4: Simplify right side
   864,825,514.72x = 720,519,501,803,870,848
5. Step 5: Solve for x
   x = 720,519,501,803,870,848/864,825,514.72
6. Step 6: Final answer
   x = 833,138,580.60