Finding the Fourth Proportional to 105,548.36, 158,321.51 and 45,619.22

Step by Step Solution

1. Step 1: Write the proportion equation
   105,548.36 : 158,321.51 = 45,619.22 : x
2. Step 2: Convert to fraction form
   105,548.36/158,321.51 = 45,619.22/x
3. Step 3: Cross multiply
   105,548.36x = 158,321.51 × 45,619.22
4. Step 4: Simplify right side
   105,548.36x = 7,222,502,775.72
5. Step 5: Solve for x
   x = 7,222,502,775.72/105,548.36
6. Step 6: Final answer
   x = 68,428.38