Finding the Fourth Proportional to 105,106, 145,049.34 and 57,362.40

Step by Step Solution

1. Step 1: Write the proportion equation
   105,106 : 145,049.34 = 57,362.40 : x
2. Step 2: Convert to fraction form
   105,106/145,049.34 = 57,362.40/x
3. Step 3: Cross multiply
   105,106x = 145,049.34 × 57,362.40
4. Step 4: Simplify right side
   105,106x = 8,320,378,260.82
5. Step 5: Solve for x
   x = 8,320,378,260.82/105,106
6. Step 6: Final answer
   x = 79,161.78