Finding the Fourth Proportional to 82,535.91, 123,874.57 and 81,914.64

Step by Step Solution

1. Step 1: Write the proportion equation
   82,535.91 : 123,874.57 = 81,914.64 : x
2. Step 2: Convert to fraction form
   82,535.91/123,874.57 = 81,914.64/x
3. Step 3: Cross multiply
   82,535.91x = 123,874.57 × 81,914.64
4. Step 4: Simplify right side
   82,535.91x = 10,147,140,680.59
5. Step 5: Solve for x
   x = 10,147,140,680.59/82,535.91
6. Step 6: Final answer
   x = 122,942.13