Finding the Fourth Proportional to 82,127.32, 123,398.57 and 78,805.81

Step by Step Solution

1. Step 1: Write the proportion equation
   82,127.32 : 123,398.57 = 78,805.81 : x
2. Step 2: Convert to fraction form
   82,127.32/123,398.57 = 78,805.81/x
3. Step 3: Cross multiply
   82,127.32x = 123,398.57 × 78,805.81
4. Step 4: Simplify right side
   82,127.32x = 9,724,524,446.72
5. Step 5: Solve for x
   x = 9,724,524,446.72/82,127.32
6. Step 6: Final answer
   x = 118,407.92