Finding the Fourth Proportional to 105,647.49, 158,478.53 and 39,086.15

Step by Step Solution

1. Step 1: Write the proportion equation
   105,647.49 : 158,478.53 = 39,086.15 : x
2. Step 2: Convert to fraction form
   105,647.49/158,478.53 = 39,086.15/x
3. Step 3: Cross multiply
   105,647.49x = 158,478.53 × 39,086.15
4. Step 4: Simplify right side
   105,647.49x = 6,194,314,607.54
5. Step 5: Solve for x
   x = 6,194,314,607.54/105,647.49
6. Step 6: Final answer
   x = 58,631.91