Finding the Fourth Proportional to 105,766.78, 145,937.33 and 62,738.16

Step by Step Solution

1. Step 1: Write the proportion equation
   105,766.78 : 145,937.33 = 62,738.16 : x
2. Step 2: Convert to fraction form
   105,766.78/145,937.33 = 62,738.16/x
3. Step 3: Cross multiply
   105,766.78x = 145,937.33 × 62,738.16
4. Step 4: Simplify right side
   105,766.78x = 9,155,839,245.82
5. Step 5: Solve for x
   x = 9,155,839,245.82/105,766.78
6. Step 6: Final answer
   x = 86,566.31