Finding the Fourth Proportional to 943,649,009.87, 1,415,818,672.72 and 439,105,954.98

Step by Step Solution

1. Step 1: Write the proportion equation
   943,649,009.87 : 1,415,818,672.72 = 439,105,954.98 : x
2. Step 2: Convert to fraction form
   943,649,009.87/1,415,818,672.72 = 439,105,954.98/x
3. Step 3: Cross multiply
   943,649,009.87x = 1,415,818,672.72 × 439,105,954.98
4. Step 4: Simplify right side
   943,649,009.87x = 621,694,410,367,443,200
5. Step 5: Solve for x
   x = 621,694,410,367,443,200/943,649,009.87
6. Step 6: Final answer
   x = 658,819,543.99