Finding the Fourth Proportional to 105,394.72, 145,441.04 and 60,087.29

Step by Step Solution

1. Step 1: Write the proportion equation
   105,394.72 : 145,441.04 = 60,087.29 : x
2. Step 2: Convert to fraction form
   105,394.72/145,441.04 = 60,087.29/x
3. Step 3: Cross multiply
   105,394.72x = 145,441.04 × 60,087.29
4. Step 4: Simplify right side
   105,394.72x = 8,739,158,654.89
5. Step 5: Solve for x
   x = 8,739,158,654.89/105,394.72
6. Step 6: Final answer
   x = 82,918.37