Finding the Fourth Proportional to 82,086.76, 122,536.56 and 72,122.24

Step by Step Solution

1. Step 1: Write the proportion equation
   82,086.76 : 122,536.56 = 72,122.24 : x
2. Step 2: Convert to fraction form
   82,086.76/122,536.56 = 72,122.24/x
3. Step 3: Cross multiply
   82,086.76x = 122,536.56 × 72,122.24
4. Step 4: Simplify right side
   82,086.76x = 8,837,610,828.48
5. Step 5: Solve for x
   x = 8,837,610,828.48/82,086.76
6. Step 6: Final answer
   x = 107,661.83