Finding the Fourth Proportional to 78,682,699.42, 108,538,535.28 and 55,196,204.18

Step by Step Solution

1. Step 1: Write the proportion equation
   78,682,699.42 : 108,538,535.28 = 55,196,204.18 : x
2. Step 2: Convert to fraction form
   78,682,699.42/108,538,535.28 = 55,196,204.18/x
3. Step 3: Cross multiply
   78,682,699.42x = 108,538,535.28 × 55,196,204.18
4. Step 4: Simplify right side
   78,682,699.42x = 5,990,915,154,713,014
5. Step 5: Solve for x
   x = 5,990,915,154,713,014/78,682,699.42
6. Step 6: Final answer
   x = 76,140,183.28