Finding the Fourth Proportional to 1,180,801,499.50, 1,629,495,341.53 and 644,953,053.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,180,801,499.50 : 1,629,495,341.53 = 644,953,053.02 : x
2. Step 2: Convert to fraction form
   1,180,801,499.50/1,629,495,341.53 = 644,953,053.02/x
3. Step 3: Cross multiply
   1,180,801,499.50x = 1,629,495,341.53 × 644,953,053.02
4. Step 4: Simplify right side
   1,180,801,499.50x = 1,050,947,995,393,493,632
5. Step 5: Solve for x
   x = 1,050,947,995,393,493,632/1,180,801,499.50
6. Step 6: Final answer
   x = 890,029,353.66