Finding the Fourth Proportional to 912,258,690.72, 1,259,053,301.52 and 718,149,086.88

Step by Step Solution

1. Step 1: Write the proportion equation
   912,258,690.72 : 1,259,053,301.52 = 718,149,086.88 : x
2. Step 2: Convert to fraction form
   912,258,690.72/1,259,053,301.52 = 718,149,086.88/x
3. Step 3: Cross multiply
   912,258,690.72x = 1,259,053,301.52 × 718,149,086.88
4. Step 4: Simplify right side
   912,258,690.72x = 904,187,978,819,837,312
5. Step 5: Solve for x
   x = 904,187,978,819,837,312/912,258,690.72
6. Step 6: Final answer
   x = 991,153,044.65