Finding the Fourth Proportional to 71,826.78, 107,529.30 and 50,404.98

Step by Step Solution

1. Step 1: Write the proportion equation
   71,826.78 : 107,529.30 = 50,404.98 : x
2. Step 2: Convert to fraction form
   71,826.78/107,529.30 = 50,404.98/x
3. Step 3: Cross multiply
   71,826.78x = 107,529.30 × 50,404.98
4. Step 4: Simplify right side
   71,826.78x = 5,420,012,215.91
5. Step 5: Solve for x
   x = 5,420,012,215.91/71,826.78
6. Step 6: Final answer
   x = 75,459.49