Finding the Fourth Proportional to 80,170,945.09, 120,341,456.70 and 71,008,397.89

Step by Step Solution

1. Step 1: Write the proportion equation
   80,170,945.09 : 120,341,456.70 = 71,008,397.89 : x
2. Step 2: Convert to fraction form
   80,170,945.09/120,341,456.70 = 71,008,397.89/x
3. Step 3: Cross multiply
   80,170,945.09x = 120,341,456.70 × 71,008,397.89
4. Step 4: Simplify right side
   80,170,945.09x = 8,545,254,040,015,807
5. Step 5: Solve for x
   x = 8,545,254,040,015,807/80,170,945.09
6. Step 6: Final answer
   x = 106,587,916.99