Finding the Fourth Proportional to 1,499,588,249.31, 2,249,530,907.57 and 554,434,152.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499,588,249.31 : 2,249,530,907.57 = 554,434,152.78 : x
2. Step 2: Convert to fraction form
   1,499,588,249.31/2,249,530,907.57 = 554,434,152.78/x
3. Step 3: Cross multiply
   1,499,588,249.31x = 2,249,530,907.57 × 554,434,152.78
4. Step 4: Simplify right side
   1,499,588,249.31x = 1,247,216,762,890,997,504
5. Step 5: Solve for x
   x = 1,247,216,762,890,997,504/1,499,588,249.31
6. Step 6: Final answer
   x = 831,706,145.65