Finding the Fourth Proportional to 105,050.98, 144,971.13 and 57,304.72

Step by Step Solution

1. Step 1: Write the proportion equation
   105,050.98 : 144,971.13 = 57,304.72 : x
2. Step 2: Convert to fraction form
   105,050.98/144,971.13 = 57,304.72/x
3. Step 3: Cross multiply
   105,050.98x = 144,971.13 × 57,304.72
4. Step 4: Simplify right side
   105,050.98x = 8,307,530,012.73
5. Step 5: Solve for x
   x = 8,307,530,012.73/105,050.98
6. Step 6: Final answer
   x = 79,080.94