Finding the Fourth Proportional to 105,107, 145,050.72 and 57,363.40

Step by Step Solution

1. Step 1: Write the proportion equation
   105,107 : 145,050.72 = 57,363.40 : x
2. Step 2: Convert to fraction form
   105,107/145,050.72 = 57,363.40/x
3. Step 3: Cross multiply
   105,107x = 145,050.72 × 57,363.40
4. Step 4: Simplify right side
   105,107x = 8,320,602,471.65
5. Step 5: Solve for x
   x = 8,320,602,471.65/105,107
6. Step 6: Final answer
   x = 79,163.16