Finding the Fourth Proportional to 105,519.42, 145,630.71 and 60,187.02

Step by Step Solution

1. Step 1: Write the proportion equation
   105,519.42 : 145,630.71 = 60,187.02 : x
2. Step 2: Convert to fraction form
   105,519.42/145,630.71 = 60,187.02/x
3. Step 3: Cross multiply
   105,519.42x = 145,630.71 × 60,187.02
4. Step 4: Simplify right side
   105,519.42x = 8,765,078,455.38
5. Step 5: Solve for x
   x = 8,765,078,455.38/105,519.42
6. Step 6: Final answer
   x = 83,066.02