Finding the Fourth Proportional to 105,573.27, 145,691.30 and 57,826.71

Step by Step Solution

1. Step 1: Write the proportion equation
   105,573.27 : 145,691.30 = 57,826.71 : x
2. Step 2: Convert to fraction form
   105,573.27/145,691.30 = 57,826.71/x
3. Step 3: Cross multiply
   105,573.27x = 145,691.30 × 57,826.71
4. Step 4: Simplify right side
   105,573.27x = 8,424,848,265.49
5. Step 5: Solve for x
   x = 8,424,848,265.49/105,573.27
6. Step 6: Final answer
   x = 79,800.96