Finding the Fourth Proportional to 105,049.64, 144,966.15 and 57,304.71

Step by Step Solution

1. Step 1: Write the proportion equation
   105,049.64 : 144,966.15 = 57,304.71 : x
2. Step 2: Convert to fraction form
   105,049.64/144,966.15 = 57,304.71/x
3. Step 3: Cross multiply
   105,049.64x = 144,966.15 × 57,304.71
4. Step 4: Simplify right side
   105,049.64x = 8,307,243,185.57
5. Step 5: Solve for x
   x = 8,307,243,185.57/105,049.64
6. Step 6: Final answer
   x = 79,079.21