Finding the Fourth Proportional to 1,443,607,969.55, 2,165,065,238.08 and 666,506,989.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,443,607,969.55 : 2,165,065,238.08 = 666,506,989.49 : x
2. Step 2: Convert to fraction form
   1,443,607,969.55/2,165,065,238.08 = 666,506,989.49/x
3. Step 3: Cross multiply
   1,443,607,969.55x = 2,165,065,238.08 × 666,506,989.49
4. Step 4: Simplify right side
   1,443,607,969.55x = 1,443,031,113,882,150,912
5. Step 5: Solve for x
   x = 1,443,031,113,882,150,912/1,443,607,969.55
6. Step 6: Final answer
   x = 999,600,406.98