Finding the Fourth Proportional to 108,498.12, 162,125.04 and 82,709.88

Step by Step Solution

1. Step 1: Write the proportion equation
   108,498.12 : 162,125.04 = 82,709.88 : x
2. Step 2: Convert to fraction form
   108,498.12/162,125.04 = 82,709.88/x
3. Step 3: Cross multiply
   108,498.12x = 162,125.04 × 82,709.88
4. Step 4: Simplify right side
   108,498.12x = 13,409,342,603.40
5. Step 5: Solve for x
   x = 13,409,342,603.40/108,498.12
6. Step 6: Final answer
   x = 123,590.55