Finding the Fourth Proportional to 104,870.28, 144,722.25 and 57,124.02

Step by Step Solution

1. Step 1: Write the proportion equation
   104,870.28 : 144,722.25 = 57,124.02 : x
2. Step 2: Convert to fraction form
   104,870.28/144,722.25 = 57,124.02/x
3. Step 3: Cross multiply
   104,870.28x = 144,722.25 × 57,124.02
4. Step 4: Simplify right side
   104,870.28x = 8,267,116,703.45
5. Step 5: Solve for x
   x = 8,267,116,703.45/104,870.28
6. Step 6: Final answer
   x = 78,831.84