Finding the Fourth Proportional to 105,168.57, 157,501.38 and 60,660.39

Step by Step Solution

1. Step 1: Write the proportion equation
   105,168.57 : 157,501.38 = 60,660.39 : x
2. Step 2: Convert to fraction form
   105,168.57/157,501.38 = 60,660.39/x
3. Step 3: Cross multiply
   105,168.57x = 157,501.38 × 60,660.39
4. Step 4: Simplify right side
   105,168.57x = 9,554,095,136.34
5. Step 5: Solve for x
   x = 9,554,095,136.34/105,168.57
6. Step 6: Final answer
   x = 90,845.54