Finding the Fourth Proportional to 145,982.72, 201,456.18 and 82,320.50

Step by Step Solution

1. Step 1: Write the proportion equation
   145,982.72 : 201,456.18 = 82,320.50 : x
2. Step 2: Convert to fraction form
   145,982.72/201,456.18 = 82,320.50/x
3. Step 3: Cross multiply
   145,982.72x = 201,456.18 × 82,320.50
4. Step 4: Simplify right side
   145,982.72x = 16,583,973,969.33
5. Step 5: Solve for x
   x = 16,583,973,969.33/145,982.72
6. Step 6: Final answer
   x = 113,602.31