Finding the Fourth Proportional to 139,675,342.09, 192,734,505.39 and 80,936,939.83

Step by Step Solution

1. Step 1: Write the proportion equation
   139,675,342.09 : 192,734,505.39 = 80,936,939.83 : x
2. Step 2: Convert to fraction form
   139,675,342.09/192,734,505.39 = 80,936,939.83/x
3. Step 3: Cross multiply
   139,675,342.09x = 192,734,505.39 × 80,936,939.83
4. Step 4: Simplify right side
   139,675,342.09x = 15,599,341,065,915,240
5. Step 5: Solve for x
   x = 15,599,341,065,915,240/139,675,342.09
6. Step 6: Final answer
   x = 111,682,855.63