Finding the Fourth Proportional to 1,279,419,009.30, 1,919,128,499.55 and 310,070,625.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,279,419,009.30 : 1,919,128,499.55 = 310,070,625.30 : x
2. Step 2: Convert to fraction form
   1,279,419,009.30/1,919,128,499.55 = 310,070,625.30/x
3. Step 3: Cross multiply
   1,279,419,009.30x = 1,919,128,499.55 × 310,070,625.30
4. Step 4: Simplify right side
   1,279,419,009.30x = 595,065,373,886,519,296
5. Step 5: Solve for x
   x = 595,065,373,886,519,296/1,279,419,009.30
6. Step 6: Final answer
   x = 465,105,934.46