Finding the Fourth Proportional to 105,622.94, 145,758.83 and 57,876.17

Step by Step Solution

1. Step 1: Write the proportion equation
   105,622.94 : 145,758.83 = 57,876.17 : x
2. Step 2: Convert to fraction form
   105,622.94/145,758.83 = 57,876.17/x
3. Step 3: Cross multiply
   105,622.94x = 145,758.83 × 57,876.17
4. Step 4: Simplify right side
   105,622.94x = 8,435,961,805.91
5. Step 5: Solve for x
   x = 8,435,961,805.91/105,622.94
6. Step 6: Final answer
   x = 79,868.65