Finding the Fourth Proportional to 1,180,003,697.02, 1,628,395,806.63 and 685,012,429.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,180,003,697.02 : 1,628,395,806.63 = 685,012,429.18 : x
2. Step 2: Convert to fraction form
   1,180,003,697.02/1,628,395,806.63 = 685,012,429.18/x
3. Step 3: Cross multiply
   1,180,003,697.02x = 1,628,395,806.63 × 685,012,429.18
4. Step 4: Simplify right side
   1,180,003,697.02x = 1,115,471,367,166,141,824
5. Step 5: Solve for x
   x = 1,115,471,367,166,141,824/1,180,003,697.02
6. Step 6: Final answer
   x = 945,311,756.21