Finding the Fourth Proportional to 1,250,037,288.99, 1,724,892,906.96 and 685,373,580.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,250,037,288.99 : 1,724,892,906.96 = 685,373,580.50 : x
2. Step 2: Convert to fraction form
   1,250,037,288.99/1,724,892,906.96 = 685,373,580.50/x
3. Step 3: Cross multiply
   1,250,037,288.99x = 1,724,892,906.96 × 685,373,580.50
4. Step 4: Simplify right side
   1,250,037,288.99x = 1,182,196,027,613,604,096
5. Step 5: Solve for x
   x = 1,182,196,027,613,604,096/1,250,037,288.99
6. Step 6: Final answer
   x = 945,728,609.88