Finding the Fourth Proportional to 105,685.43, 145,842.73 and 57,937.14

Step by Step Solution

1. Step 1: Write the proportion equation
   105,685.43 : 145,842.73 = 57,937.14 : x
2. Step 2: Convert to fraction form
   105,685.43/145,842.73 = 57,937.14/x
3. Step 3: Cross multiply
   105,685.43x = 145,842.73 × 57,937.14
4. Step 4: Simplify right side
   105,685.43x = 8,449,710,521.15
5. Step 5: Solve for x
   x = 8,449,710,521.15/105,685.43
6. Step 6: Final answer
   x = 79,951.52