Finding the Fourth Proportional to 105,083.37, 145,014.93 and 57,336.69

Step by Step Solution

1. Step 1: Write the proportion equation
   105,083.37 : 145,014.93 = 57,336.69 : x
2. Step 2: Convert to fraction form
   105,083.37/145,014.93 = 57,336.69/x
3. Step 3: Cross multiply
   105,083.37x = 145,014.93 × 57,336.69
4. Step 4: Simplify right side
   105,083.37x = 8,314,676,086.78
5. Step 5: Solve for x
   x = 8,314,676,086.78/105,083.37
6. Step 6: Final answer
   x = 79,124.57