Finding the Fourth Proportional to 105,109.09, 145,050.95 and 57,363.50

Step by Step Solution

1. Step 1: Write the proportion equation
   105,109.09 : 145,050.95 = 57,363.50 : x
2. Step 2: Convert to fraction form
   105,109.09/145,050.95 = 57,363.50/x
3. Step 3: Cross multiply
   105,109.09x = 145,050.95 × 57,363.50
4. Step 4: Simplify right side
   105,109.09x = 8,320,630,170.33
5. Step 5: Solve for x
   x = 8,320,630,170.33/105,109.09
6. Step 6: Final answer
   x = 79,161.85