Finding the Fourth Proportional to 104,870.43, 144,716.76 and 57,124.17

Step by Step Solution

1. Step 1: Write the proportion equation
   104,870.43 : 144,716.76 = 57,124.17 : x
2. Step 2: Convert to fraction form
   104,870.43/144,716.76 = 57,124.17/x
3. Step 3: Cross multiply
   104,870.43x = 144,716.76 × 57,124.17
4. Step 4: Simplify right side
   104,870.43x = 8,266,824,800.09
5. Step 5: Solve for x
   x = 8,266,824,800.09/104,870.43
6. Step 6: Final answer
   x = 78,828.94