Finding the Fourth Proportional to 105,762.51, 145,942.76 and 60,440.38

Step by Step Solution

1. Step 1: Write the proportion equation
   105,762.51 : 145,942.76 = 60,440.38 : x
2. Step 2: Convert to fraction form
   105,762.51/145,942.76 = 60,440.38/x
3. Step 3: Cross multiply
   105,762.51x = 145,942.76 × 60,440.38
4. Step 4: Simplify right side
   105,762.51x = 8,820,835,658.89
5. Step 5: Solve for x
   x = 8,820,835,658.89/105,762.51
6. Step 6: Final answer
   x = 83,402.29