Finding the Fourth Proportional to 80,207,103.76, 120,103,453.38 and 55,356,196.48

Step by Step Solution

1. Step 1: Write the proportion equation
   80,207,103.76 : 120,103,453.38 = 55,356,196.48 : x
2. Step 2: Convert to fraction form
   80,207,103.76/120,103,453.38 = 55,356,196.48/x
3. Step 3: Cross multiply
   80,207,103.76x = 120,103,453.38 × 55,356,196.48
4. Step 4: Simplify right side
   80,207,103.76x = 6,648,470,363,812,830
5. Step 5: Solve for x
   x = 6,648,470,363,812,830/80,207,103.76
6. Step 6: Final answer
   x = 82,891,290.83