Finding the Fourth Proportional to 722,491,900.71, 997,066,229.61 and 404,958,015.48

Step by Step Solution

1. Step 1: Write the proportion equation
   722,491,900.71 : 997,066,229.61 = 404,958,015.48 : x
2. Step 2: Convert to fraction form
   722,491,900.71/997,066,229.61 = 404,958,015.48/x
3. Step 3: Cross multiply
   722,491,900.71x = 997,066,229.61 × 404,958,015.48
4. Step 4: Simplify right side
   722,491,900.71x = 403,769,961,650,249,152
5. Step 5: Solve for x
   x = 403,769,961,650,249,152/722,491,900.71
6. Step 6: Final answer
   x = 558,857,422.84