Finding the Fourth Proportional to 912,321,022.82, 1,259,029,570.98 and 515,835,499.72

Step by Step Solution

1. Step 1: Write the proportion equation
   912,321,022.82 : 1,259,029,570.98 = 515,835,499.72 : x
2. Step 2: Convert to fraction form
   912,321,022.82/1,259,029,570.98 = 515,835,499.72/x
3. Step 3: Cross multiply
   912,321,022.82x = 1,259,029,570.98 × 515,835,499.72
4. Step 4: Simplify right side
   912,321,022.82x = 649,452,147,903,590,144
5. Step 5: Solve for x
   x = 649,452,147,903,590,144/912,321,022.82
6. Step 6: Final answer
   x = 711,868,006.61