Finding the Fourth Proportional to 10,961,170,105.21, 16,438,070,143.10 and 3,972,518,173.69

Step by Step Solution

1. Step 1: Write the proportion equation
   10,961,170,105.21 : 16,438,070,143.10 = 3,972,518,173.69 : x
2. Step 2: Convert to fraction form
   10,961,170,105.21/16,438,070,143.10 = 3,972,518,173.69/x
3. Step 3: Cross multiply
   10,961,170,105.21x = 16,438,070,143.10 × 3,972,518,173.69
4. Step 4: Simplify right side
   10,961,170,105.21x = 65,300,532,383,835,865,088
5. Step 5: Solve for x
   x = 65,300,532,383,835,865,088/10,961,170,105.21
6. Step 6: Final answer
   x = 5,957,441,747.28