Finding the Fourth Proportional to 80,928.25, 121,400.71 and 31,050.07

Step by Step Solution

1. Step 1: Write the proportion equation
   80,928.25 : 121,400.71 = 31,050.07 : x
2. Step 2: Convert to fraction form
   80,928.25/121,400.71 = 31,050.07/x
3. Step 3: Cross multiply
   80,928.25x = 121,400.71 × 31,050.07
4. Step 4: Simplify right side
   80,928.25x = 3,769,500,162.42
5. Step 5: Solve for x
   x = 3,769,500,162.42/80,928.25
6. Step 6: Final answer
   x = 46,578.30