Finding the Fourth Proportional to 82,539.76, 113,911.76 and 50,719.72

Step by Step Solution

1. Step 1: Write the proportion equation
   82,539.76 : 113,911.76 = 50,719.72 : x
2. Step 2: Convert to fraction form
   82,539.76/113,911.76 = 50,719.72/x
3. Step 3: Cross multiply
   82,539.76x = 113,911.76 × 50,719.72
4. Step 4: Simplify right side
   82,539.76x = 5,777,572,571.91
5. Step 5: Solve for x
   x = 5,777,572,571.91/82,539.76
6. Step 6: Final answer
   x = 69,997.45