Finding the Fourth Proportional to 105,000.56, 144,900.42 and 57,253.79

Step by Step Solution

1. Step 1: Write the proportion equation
   105,000.56 : 144,900.42 = 57,253.79 : x
2. Step 2: Convert to fraction form
   105,000.56/144,900.42 = 57,253.79/x
3. Step 3: Cross multiply
   105,000.56x = 144,900.42 × 57,253.79
4. Step 4: Simplify right side
   105,000.56x = 8,296,098,217.59
5. Step 5: Solve for x
   x = 8,296,098,217.59/105,000.56
6. Step 6: Final answer
   x = 79,010.04