Finding the Fourth Proportional to 1,064,804,940.68, 1,469,178,892.50 and 618,503,153

Step by Step Solution

1. Step 1: Write the proportion equation
   1,064,804,940.68 : 1,469,178,892.50 = 618,503,153 : x
2. Step 2: Convert to fraction form
   1,064,804,940.68/1,469,178,892.50 = 618,503,153/x
3. Step 3: Cross multiply
   1,064,804,940.68x = 1,469,178,892.50 × 618,503,153
4. Step 4: Simplify right side
   1,064,804,940.68x = 908,691,777,332,298,112
5. Step 5: Solve for x
   x = 908,691,777,332,298,112/1,064,804,940.68
6. Step 6: Final answer
   x = 853,388,017.48