Finding the Fourth Proportional to 105,569.52, 145,686.12 and 57,822.96

Step by Step Solution

1. Step 1: Write the proportion equation
   105,569.52 : 145,686.12 = 57,822.96 : x
2. Step 2: Convert to fraction form
   105,569.52/145,686.12 = 57,822.96/x
3. Step 3: Cross multiply
   105,569.52x = 145,686.12 × 57,822.96
4. Step 4: Simplify right side
   105,569.52x = 8,424,002,689.32
5. Step 5: Solve for x
   x = 8,424,002,689.32/105,569.52
6. Step 6: Final answer
   x = 79,795.78