Finding the Fourth Proportional to 105,456.08, 145,545.76 and 60,134.16

Step by Step Solution

1. Step 1: Write the proportion equation
   105,456.08 : 145,545.76 = 60,134.16 : x
2. Step 2: Convert to fraction form
   105,456.08/145,545.76 = 60,134.16/x
3. Step 3: Cross multiply
   105,456.08x = 145,545.76 × 60,134.16
4. Step 4: Simplify right side
   105,456.08x = 8,752,272,019.16
5. Step 5: Solve for x
   x = 8,752,272,019.16/105,456.08
6. Step 6: Final answer
   x = 82,994.48