Finding the Fourth Proportional to 105,470.72, 145,520.77 and 60,132.17

Step by Step Solution

1. Step 1: Write the proportion equation
   105,470.72 : 145,520.77 = 60,132.17 : x
2. Step 2: Convert to fraction form
   105,470.72/145,520.77 = 60,132.17/x
3. Step 3: Cross multiply
   105,470.72x = 145,520.77 × 60,132.17
4. Step 4: Simplify right side
   105,470.72x = 8,750,479,680.17
5. Step 5: Solve for x
   x = 8,750,479,680.17/105,470.72
6. Step 6: Final answer
   x = 82,965.96