Finding the Fourth Proportional to 105,569.88, 145,685.34 and 57,822.84

Step by Step Solution

1. Step 1: Write the proportion equation
   105,569.88 : 145,685.34 = 57,822.84 : x
2. Step 2: Convert to fraction form
   105,569.88/145,685.34 = 57,822.84/x
3. Step 3: Cross multiply
   105,569.88x = 145,685.34 × 57,822.84
4. Step 4: Simplify right side
   105,569.88x = 8,423,940,105.17
5. Step 5: Solve for x
   x = 8,423,940,105.17/105,569.88
6. Step 6: Final answer
   x = 79,794.92