Finding the Fourth Proportional to 105,610.61, 145,737.06 and 60,286.79

Step by Step Solution

1. Step 1: Write the proportion equation
   105,610.61 : 145,737.06 = 60,286.79 : x
2. Step 2: Convert to fraction form
   105,610.61/145,737.06 = 60,286.79/x
3. Step 3: Cross multiply
   105,610.61x = 145,737.06 × 60,286.79
4. Step 4: Simplify right side
   105,610.61x = 8,786,019,189.05
5. Step 5: Solve for x
   x = 8,786,019,189.05/105,610.61
6. Step 6: Final answer
   x = 83,192.58