Finding the Fourth Proportional to 82,662.21, 123,990.57 and 35,915.09

Step by Step Solution

1. Step 1: Write the proportion equation
   82,662.21 : 123,990.57 = 35,915.09 : x
2. Step 2: Convert to fraction form
   82,662.21/123,990.57 = 35,915.09/x
3. Step 3: Cross multiply
   82,662.21x = 123,990.57 × 35,915.09
4. Step 4: Simplify right side
   82,662.21x = 4,453,131,860.75
5. Step 5: Solve for x
   x = 4,453,131,860.75/82,662.21
6. Step 6: Final answer
   x = 53,871.43