Finding the Fourth Proportional to 82,127.82, 123,399.32 and 78,806.31

Step by Step Solution

1. Step 1: Write the proportion equation
   82,127.82 : 123,399.32 = 78,806.31 : x
2. Step 2: Convert to fraction form
   82,127.82/123,399.32 = 78,806.31/x
3. Step 3: Cross multiply
   82,127.82x = 123,399.32 × 78,806.31
4. Step 4: Simplify right side
   82,127.82x = 9,724,645,065.71
5. Step 5: Solve for x
   x = 9,724,645,065.71/82,127.82
6. Step 6: Final answer
   x = 118,408.66