Finding the Fourth Proportional to 733,680,978.78, 1,012,484,153.76 and 399,155,900.94

Step by Step Solution

1. Step 1: Write the proportion equation
   733,680,978.78 : 1,012,484,153.76 = 399,155,900.94 : x
2. Step 2: Convert to fraction form
   733,680,978.78/1,012,484,153.76 = 399,155,900.94/x
3. Step 3: Cross multiply
   733,680,978.78x = 1,012,484,153.76 × 399,155,900.94
4. Step 4: Simplify right side
   733,680,978.78x = 404,139,024,581,546,304
5. Step 5: Solve for x
   x = 404,139,024,581,546,304/733,680,978.78
6. Step 6: Final answer
   x = 550,837,538.75