Finding the Fourth Proportional to 82,139,424.39, 123,032,007.14 and 77,310,120.15

Step by Step Solution

1. Step 1: Write the proportion equation
   82,139,424.39 : 123,032,007.14 = 77,310,120.15 : x
2. Step 2: Convert to fraction form
   82,139,424.39/123,032,007.14 = 77,310,120.15/x
3. Step 3: Cross multiply
   82,139,424.39x = 123,032,007.14 × 77,310,120.15
4. Step 4: Simplify right side
   82,139,424.39x = 9,511,619,253,902,508
5. Step 5: Solve for x
   x = 9,511,619,253,902,508/82,139,424.39
6. Step 6: Final answer
   x = 115,798,464.92