Finding the Fourth Proportional to 105,485.89, 145,541.73 and 60,147.34

Step by Step Solution

1. Step 1: Write the proportion equation
   105,485.89 : 145,541.73 = 60,147.34 : x
2. Step 2: Convert to fraction form
   105,485.89/145,541.73 = 60,147.34/x
3. Step 3: Cross multiply
   105,485.89x = 145,541.73 × 60,147.34
4. Step 4: Simplify right side
   105,485.89x = 8,753,947,918.50
5. Step 5: Solve for x
   x = 8,753,947,918.50/105,485.89
6. Step 6: Final answer
   x = 82,986.91