Finding the Fourth Proportional to 221,170,267, 305,215,099.77 and 123,385,123

Step by Step Solution

1. Step 1: Write the proportion equation
   221,170,267 : 305,215,099.77 = 123,385,123 : x
2. Step 2: Convert to fraction form
   221,170,267/305,215,099.77 = 123,385,123/x
3. Step 3: Cross multiply
   221,170,267x = 305,215,099.77 × 123,385,123
4. Step 4: Simplify right side
   221,170,267x = 37,659,002,626,578,720
5. Step 5: Solve for x
   x = 37,659,002,626,578,720/221,170,267
6. Step 6: Final answer
   x = 170,271,542.99