Finding the Fourth Proportional to 144,493,155.50, 199,401,076.62 and 78,413,639.40

Step by Step Solution

1. Step 1: Write the proportion equation
   144,493,155.50 : 199,401,076.62 = 78,413,639.40 : x
2. Step 2: Convert to fraction form
   144,493,155.50/199,401,076.62 = 78,413,639.40/x
3. Step 3: Cross multiply
   144,493,155.50x = 199,401,076.62 × 78,413,639.40
4. Step 4: Simplify right side
   144,493,155.50x = 15,635,764,118,052,452
5. Step 5: Solve for x
   x = 15,635,764,118,052,452/144,493,155.50
6. Step 6: Final answer
   x = 108,211,105.67