Finding the Fourth Proportional to 105,550.36, 158,324.50 and 45,621.22

Step by Step Solution

1. Step 1: Write the proportion equation
   105,550.36 : 158,324.50 = 45,621.22 : x
2. Step 2: Convert to fraction form
   105,550.36/158,324.50 = 45,621.22/x
3. Step 3: Cross multiply
   105,550.36x = 158,324.50 × 45,621.22
4. Step 4: Simplify right side
   105,550.36x = 7,222,956,845.89
5. Step 5: Solve for x
   x = 7,222,956,845.89/105,550.36
6. Step 6: Final answer
   x = 68,431.38