Finding the Fourth Proportional to 1,297,789,109.63, 1,790,939,071.89 and 703,069,339.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,297,789,109.63 : 1,790,939,071.89 = 703,069,339.55 : x
2. Step 2: Convert to fraction form
   1,297,789,109.63/1,790,939,071.89 = 703,069,339.55/x
3. Step 3: Cross multiply
   1,297,789,109.63x = 1,790,939,071.89 × 703,069,339.55
4. Step 4: Simplify right side
   1,297,789,109.63x = 1,259,154,350,447,992,320
5. Step 5: Solve for x
   x = 1,259,154,350,447,992,320/1,297,789,109.63
6. Step 6: Final answer
   x = 970,230,325.64