Finding the Fourth Proportional to 119,782,928.78, 165,300,939.69 and 64,778,785.28

Step by Step Solution

1. Step 1: Write the proportion equation
   119,782,928.78 : 165,300,939.69 = 64,778,785.28 : x
2. Step 2: Convert to fraction form
   119,782,928.78/165,300,939.69 = 64,778,785.28/x
3. Step 3: Cross multiply
   119,782,928.78x = 165,300,939.69 × 64,778,785.28
4. Step 4: Simplify right side
   119,782,928.78x = 10,707,994,078,760,740
5. Step 5: Solve for x
   x = 10,707,994,078,760,740/119,782,928.78
6. Step 6: Final answer
   x = 89,394,992.99