Finding the Fourth Proportional to 105,348.72, 145,394.88 and 60,043.20

Step by Step Solution

1. Step 1: Write the proportion equation
   105,348.72 : 145,394.88 = 60,043.20 : x
2. Step 2: Convert to fraction form
   105,348.72/145,394.88 = 60,043.20/x
3. Step 3: Cross multiply
   105,348.72x = 145,394.88 × 60,043.20
4. Step 4: Simplify right side
   105,348.72x = 8,729,973,858.82
5. Step 5: Solve for x
   x = 8,729,973,858.82/105,348.72
6. Step 6: Final answer
   x = 82,867.39