Finding the Fourth Proportional to 314,928,436.05, 439,879,443.75 and 314,928,436.05

Step by Step Solution

1. Step 1: Write the proportion equation
   314,928,436.05 : 439,879,443.75 = 314,928,436.05 : x
2. Step 2: Convert to fraction form
   314,928,436.05/439,879,443.75 = 314,928,436.05/x
3. Step 3: Cross multiply
   314,928,436.05x = 439,879,443.75 × 314,928,436.05
4. Step 4: Simplify right side
   314,928,436.05x = 138,530,545,270,731,456
5. Step 5: Solve for x
   x = 138,530,545,270,731,456/314,928,436.05
6. Step 6: Final answer
   x = 439,879,443.75