Finding the Fourth Proportional to 105,206, 145,188.60 and 60,494

Step by Step Solution

1. Step 1: Write the proportion equation
   105,206 : 145,188.60 = 60,494 : x
2. Step 2: Convert to fraction form
   105,206/145,188.60 = 60,494/x
3. Step 3: Cross multiply
   105,206x = 145,188.60 × 60,494
4. Step 4: Simplify right side
   105,206x = 8,783,039,168.40
5. Step 5: Solve for x
   x = 8,783,039,168.40/105,206
6. Step 6: Final answer
   x = 83,484.20