Finding the Fourth Proportional to 439,792,953.83, 606,926,128.27 and 258,752,572.53

Step by Step Solution

1. Step 1: Write the proportion equation
   439,792,953.83 : 606,926,128.27 = 258,752,572.53 : x
2. Step 2: Convert to fraction form
   439,792,953.83/606,926,128.27 = 258,752,572.53/x
3. Step 3: Cross multiply
   439,792,953.83x = 606,926,128.27 × 258,752,572.53
4. Step 4: Simplify right side
   439,792,953.83x = 157,043,697,022,500,640
5. Step 5: Solve for x
   x = 157,043,697,022,500,640/439,792,953.83
6. Step 6: Final answer
   x = 357,085,523.21