Finding the Fourth Proportional to 105,594.23, 145,723.67 and 57,847.57

Step by Step Solution

1. Step 1: Write the proportion equation
   105,594.23 : 145,723.67 = 57,847.57 : x
2. Step 2: Convert to fraction form
   105,594.23/145,723.67 = 57,847.57/x
3. Step 3: Cross multiply
   105,594.23x = 145,723.67 × 57,847.57
4. Step 4: Simplify right side
   105,594.23x = 8,429,760,200.98
5. Step 5: Solve for x
   x = 8,429,760,200.98/105,594.23
6. Step 6: Final answer
   x = 79,831.64