Finding the Fourth Proportional to 248,293.50, 372,498.57 and 82,081.50

Step by Step Solution

1. Step 1: Write the proportion equation
   248,293.50 : 372,498.57 = 82,081.50 : x
2. Step 2: Convert to fraction form
   248,293.50/372,498.57 = 82,081.50/x
3. Step 3: Cross multiply
   248,293.50x = 372,498.57 × 82,081.50
4. Step 4: Simplify right side
   248,293.50x = 30,575,241,373.46
5. Step 5: Solve for x
   x = 30,575,241,373.46/248,293.50
6. Step 6: Final answer
   x = 123,141.53