Finding the Fourth Proportional to 831,522,036.78, 1,147,421,916.27 and 496,927,945.98

Step by Step Solution

1. Step 1: Write the proportion equation
   831,522,036.78 : 1,147,421,916.27 = 496,927,945.98 : x
2. Step 2: Convert to fraction form
   831,522,036.78/1,147,421,916.27 = 496,927,945.98/x
3. Step 3: Cross multiply
   831,522,036.78x = 1,147,421,916.27 × 496,927,945.98
4. Step 4: Simplify right side
   831,522,036.78x = 570,186,016,024,486,656
5. Step 5: Solve for x
   x = 570,186,016,024,486,656/831,522,036.78
6. Step 6: Final answer
   x = 685,713,656.17