Finding the Fourth Proportional to 1,294,307,470.77, 1,786,152,192.72 and 699,590,448.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,294,307,470.77 : 1,786,152,192.72 = 699,590,448.09 : x
2. Step 2: Convert to fraction form
   1,294,307,470.77/1,786,152,192.72 = 699,590,448.09/x
3. Step 3: Cross multiply
   1,294,307,470.77x = 1,786,152,192.72 × 699,590,448.09
4. Step 4: Simplify right side
   1,294,307,470.77x = 1,249,575,012,861,921,024
5. Step 5: Solve for x
   x = 1,249,575,012,861,921,024/1,294,307,470.77
6. Step 6: Final answer
   x = 965,439,079.26