Finding the Fourth Proportional to 105,645.18, 158,459.94 and 39,054.18

Step by Step Solution

1. Step 1: Write the proportion equation
   105,645.18 : 158,459.94 = 39,054.18 : x
2. Step 2: Convert to fraction form
   105,645.18/158,459.94 = 39,054.18/x
3. Step 3: Cross multiply
   105,645.18x = 158,459.94 × 39,054.18
4. Step 4: Simplify right side
   105,645.18x = 6,188,523,019.55
5. Step 5: Solve for x
   x = 6,188,523,019.55/105,645.18
6. Step 6: Final answer
   x = 58,578.38