Finding the Fourth Proportional to 3,512,334,196.38, 5,268,810,975.72 and 991,284,885.07

Step by Step Solution

1. Step 1: Write the proportion equation
   3,512,334,196.38 : 5,268,810,975.72 = 991,284,885.07 : x
2. Step 2: Convert to fraction form
   3,512,334,196.38/5,268,810,975.72 = 991,284,885.07/x
3. Step 3: Cross multiply
   3,512,334,196.38x = 5,268,810,975.72 × 991,284,885.07
4. Step 4: Simplify right side
   3,512,334,196.38x = 5,222,892,682,522,155,008
5. Step 5: Solve for x
   x = 5,222,892,682,522,155,008/3,512,334,196.38
6. Step 6: Final answer
   x = 1,487,014,728.81