Finding the Fourth Proportional to 105,769.02, 145,940.43 and 62,740.41

Step by Step Solution

1. Step 1: Write the proportion equation
   105,769.02 : 145,940.43 = 62,740.41 : x
2. Step 2: Convert to fraction form
   105,769.02/145,940.43 = 62,740.41/x
3. Step 3: Cross multiply
   105,769.02x = 145,940.43 × 62,740.41
4. Step 4: Simplify right side
   105,769.02x = 9,156,362,101.78
5. Step 5: Solve for x
   x = 9,156,362,101.78/105,769.02
6. Step 6: Final answer
   x = 86,569.41