Finding the Fourth Proportional to 1,236,990,636.39, 1,856,830,434.71 and 500,567,550.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,236,990,636.39 : 1,856,830,434.71 = 500,567,550.15 : x
2. Step 2: Convert to fraction form
   1,236,990,636.39/1,856,830,434.71 = 500,567,550.15/x
3. Step 3: Cross multiply
   1,236,990,636.39x = 1,856,830,434.71 × 500,567,550.15
4. Step 4: Simplify right side
   1,236,990,636.39x = 929,469,061,746,744,192
5. Step 5: Solve for x
   x = 929,469,061,746,744,192/1,236,990,636.39
6. Step 6: Final answer
   x = 751,395,390.07