Finding the Fourth Proportional to 120,383,743.89, 166,130,542.98 and 65,379,994.05

Step by Step Solution

1. Step 1: Write the proportion equation
   120,383,743.89 : 166,130,542.98 = 65,379,994.05 : x
2. Step 2: Convert to fraction form
   120,383,743.89/166,130,542.98 = 65,379,994.05/x
3. Step 3: Cross multiply
   120,383,743.89x = 166,130,542.98 × 65,379,994.05
4. Step 4: Simplify right side
   120,383,743.89x = 10,861,613,911,555,668
5. Step 5: Solve for x
   x = 10,861,613,911,555,668/120,383,743.89
6. Step 6: Final answer
   x = 90,224,922.07