Finding the Fourth Proportional to 82,132.21, 123,213.52 and 25,986.45

Step by Step Solution

1. Step 1: Write the proportion equation
   82,132.21 : 123,213.52 = 25,986.45 : x
2. Step 2: Convert to fraction form
   82,132.21/123,213.52 = 25,986.45/x
3. Step 3: Cross multiply
   82,132.21x = 123,213.52 × 25,986.45
4. Step 4: Simplify right side
   82,132.21x = 3,201,881,976.80
5. Step 5: Solve for x
   x = 3,201,881,976.80/82,132.21
6. Step 6: Final answer
   x = 38,984.49