Finding the Fourth Proportional to 1,320,113,499.30, 1,980,170,615.88 and 490,958,806.44

Step by Step Solution

1. Step 1: Write the proportion equation
   1,320,113,499.30 : 1,980,170,615.88 = 490,958,806.44 : x
2. Step 2: Convert to fraction form
   1,320,113,499.30/1,980,170,615.88 = 490,958,806.44/x
3. Step 3: Cross multiply
   1,320,113,499.30x = 1,980,170,615.88 × 490,958,806.44
4. Step 4: Simplify right side
   1,320,113,499.30x = 972,182,202,120,004,608
5. Step 5: Solve for x
   x = 972,182,202,120,004,608/1,320,113,499.30
6. Step 6: Final answer
   x = 736,438,346.12