Finding the Fourth Proportional to 124,600.50, 186,978.52 and 50,728.50

Step by Step Solution

1. Step 1: Write the proportion equation
   124,600.50 : 186,978.52 = 50,728.50 : x
2. Step 2: Convert to fraction form
   124,600.50/186,978.52 = 50,728.50/x
3. Step 3: Cross multiply
   124,600.50x = 186,978.52 × 50,728.50
4. Step 4: Simplify right side
   124,600.50x = 9,485,139,851.82
5. Step 5: Solve for x
   x = 9,485,139,851.82/124,600.50
6. Step 6: Final answer
   x = 76,124.41