Finding the Fourth Proportional to 120,231,121.68, 165,919,269.48 and 65,226,978.18

Step by Step Solution

1. Step 1: Write the proportion equation
   120,231,121.68 : 165,919,269.48 = 65,226,978.18 : x
2. Step 2: Convert to fraction form
   120,231,121.68/165,919,269.48 = 65,226,978.18/x
3. Step 3: Cross multiply
   120,231,121.68x = 165,919,269.48 × 65,226,978.18
4. Step 4: Simplify right side
   120,231,121.68x = 10,822,412,570,013,500
5. Step 5: Solve for x
   x = 10,822,412,570,013,500/120,231,121.68
6. Step 6: Final answer
   x = 90,013,404.34