Finding the Fourth Proportional to 150,410.31, 207,566.04 and 82,431.55

Step by Step Solution

1. Step 1: Write the proportion equation
   150,410.31 : 207,566.04 = 82,431.55 : x
2. Step 2: Convert to fraction form
   150,410.31/207,566.04 = 82,431.55/x
3. Step 3: Cross multiply
   150,410.31x = 207,566.04 × 82,431.55
4. Step 4: Simplify right side
   150,410.31x = 17,109,990,404.56
5. Step 5: Solve for x
   x = 17,109,990,404.56/150,410.31
6. Step 6: Final answer
   x = 113,755.44