Finding the Fourth Proportional to 105,453.89, 145,526.37 and 57,707.24

Step by Step Solution

1. Step 1: Write the proportion equation
   105,453.89 : 145,526.37 = 57,707.24 : x
2. Step 2: Convert to fraction form
   105,453.89/145,526.37 = 57,707.24/x
3. Step 3: Cross multiply
   105,453.89x = 145,526.37 × 57,707.24
4. Step 4: Simplify right side
   105,453.89x = 8,397,925,159.92
5. Step 5: Solve for x
   x = 8,397,925,159.92/105,453.89
6. Step 6: Final answer
   x = 79,636.00