Finding the Fourth Proportional to 1,112,978,140.84, 1,669,790,325.47 and 448,649,319.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112,978,140.84 : 1,669,790,325.47 = 448,649,319.59 : x
2. Step 2: Convert to fraction form
   1,112,978,140.84/1,669,790,325.47 = 448,649,319.59/x
3. Step 3: Cross multiply
   1,112,978,140.84x = 1,669,790,325.47 × 448,649,319.59
4. Step 4: Simplify right side
   1,112,978,140.84x = 749,150,293,380,080,128
5. Step 5: Solve for x
   x = 749,150,293,380,080,128/1,112,978,140.84
6. Step 6: Final answer
   x = 673,104,229.00