Finding the Fourth Proportional to 145,983.72, 201,457.56 and 82,321.50

Step by Step Solution

1. Step 1: Write the proportion equation
   145,983.72 : 201,457.56 = 82,321.50 : x
2. Step 2: Convert to fraction form
   145,983.72/201,457.56 = 82,321.50/x
3. Step 3: Cross multiply
   145,983.72x = 201,457.56 × 82,321.50
4. Step 4: Simplify right side
   145,983.72x = 16,584,288,525.54
5. Step 5: Solve for x
   x = 16,584,288,525.54/145,983.72
6. Step 6: Final answer
   x = 113,603.68