Finding the Fourth Proportional to 189,081.72, 283,675.20 and 82,475

Step by Step Solution

1. Step 1: Write the proportion equation
   189,081.72 : 283,675.20 = 82,475 : x
2. Step 2: Convert to fraction form
   189,081.72/283,675.20 = 82,475/x
3. Step 3: Cross multiply
   189,081.72x = 283,675.20 × 82,475
4. Step 4: Simplify right side
   189,081.72x = 23,396,112,120
5. Step 5: Solve for x
   x = 23,396,112,120/189,081.72
6. Step 6: Final answer
   x = 123,735.45