Finding the Fourth Proportional to 1,020,236,300.10, 1,530,354,450.15 and 503,675,648.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,020,236,300.10 : 1,530,354,450.15 = 503,675,648.10 : x
2. Step 2: Convert to fraction form
   1,020,236,300.10/1,530,354,450.15 = 503,675,648.10/x
3. Step 3: Cross multiply
   1,020,236,300.10x = 1,530,354,450.15 × 503,675,648.10
4. Step 4: Simplify right side
   1,020,236,300.10x = 770,802,269,502,020,480
5. Step 5: Solve for x
   x = 770,802,269,502,020,480/1,020,236,300.10
6. Step 6: Final answer
   x = 755,513,472.15