Finding the Fourth Proportional to 105,723.72, 145,895.58 and 60,401.52

Step by Step Solution

1. Step 1: Write the proportion equation
   105,723.72 : 145,895.58 = 60,401.52 : x
2. Step 2: Convert to fraction form
   105,723.72/145,895.58 = 60,401.52/x
3. Step 3: Cross multiply
   105,723.72x = 145,895.58 × 60,401.52
4. Step 4: Simplify right side
   105,723.72x = 8,812,314,793.28
5. Step 5: Solve for x
   x = 8,812,314,793.28/105,723.72
6. Step 6: Final answer
   x = 83,352.30