Finding the Fourth Proportional to 105,003.87, 144,906.02 and 57,258.01

Step by Step Solution

1. Step 1: Write the proportion equation
   105,003.87 : 144,906.02 = 57,258.01 : x
2. Step 2: Convert to fraction form
   105,003.87/144,906.02 = 57,258.01/x
3. Step 3: Cross multiply
   105,003.87x = 144,906.02 × 57,258.01
4. Step 4: Simplify right side
   105,003.87x = 8,297,030,342.22
5. Step 5: Solve for x
   x = 8,297,030,342.22/105,003.87
6. Step 6: Final answer
   x = 79,016.42