Finding the Fourth Proportional to 82,441.87, 123,682.28 and 65,638.42

Step by Step Solution

1. Step 1: Write the proportion equation
   82,441.87 : 123,682.28 = 65,638.42 : x
2. Step 2: Convert to fraction form
   82,441.87/123,682.28 = 65,638.42/x
3. Step 3: Cross multiply
   82,441.87x = 123,682.28 × 65,638.42
4. Step 4: Simplify right side
   82,441.87x = 8,118,308,803.80
5. Step 5: Solve for x
   x = 8,118,308,803.80/82,441.87
6. Step 6: Final answer
   x = 98,473.13