Finding the Fourth Proportional to 788,519,993.23, 1,088,492,654.82 and 491,309,078.88

Step by Step Solution

1. Step 1: Write the proportion equation
   788,519,993.23 : 1,088,492,654.82 = 491,309,078.88 : x
2. Step 2: Convert to fraction form
   788,519,993.23/1,088,492,654.82 = 491,309,078.88/x
3. Step 3: Cross multiply
   788,519,993.23x = 1,088,492,654.82 × 491,309,078.88
4. Step 4: Simplify right side
   788,519,993.23x = 534,786,323,613,170,496
5. Step 5: Solve for x
   x = 534,786,323,613,170,496/788,519,993.23
6. Step 6: Final answer
   x = 678,215,299.81