Finding the Fourth Proportional to 105,333.39, 145,360.02 and 57,586.71

Step by Step Solution

1. Step 1: Write the proportion equation
   105,333.39 : 145,360.02 = 57,586.71 : x
2. Step 2: Convert to fraction form
   105,333.39/145,360.02 = 57,586.71/x
3. Step 3: Cross multiply
   105,333.39x = 145,360.02 × 57,586.71
4. Step 4: Simplify right side
   105,333.39x = 8,370,805,317.33
5. Step 5: Solve for x
   x = 8,370,805,317.33/105,333.39
6. Step 6: Final answer
   x = 79,469.63