Finding the Fourth Proportional to 105,570.52, 145,687.50 and 57,823.96

Step by Step Solution

1. Step 1: Write the proportion equation
   105,570.52 : 145,687.50 = 57,823.96 : x
2. Step 2: Convert to fraction form
   105,570.52/145,687.50 = 57,823.96/x
3. Step 3: Cross multiply
   105,570.52x = 145,687.50 × 57,823.96
4. Step 4: Simplify right side
   105,570.52x = 8,424,228,172.50
5. Step 5: Solve for x
   x = 8,424,228,172.50/105,570.52
6. Step 6: Final answer
   x = 79,797.16