Finding the Fourth Proportional to 105,469.58, 145,540.71 and 60,149.48

Step by Step Solution

1. Step 1: Write the proportion equation
   105,469.58 : 145,540.71 = 60,149.48 : x
2. Step 2: Convert to fraction form
   105,469.58/145,540.71 = 60,149.48/x
3. Step 3: Cross multiply
   105,469.58x = 145,540.71 × 60,149.48
4. Step 4: Simplify right side
   105,469.58x = 8,754,197,297.63
5. Step 5: Solve for x
   x = 8,754,197,297.63/105,469.58
6. Step 6: Final answer
   x = 83,002.11