Finding the Fourth Proportional to 81,063.94, 121,601.72 and 31,144.04

Step by Step Solution

1. Step 1: Write the proportion equation
   81,063.94 : 121,601.72 = 31,144.04 : x
2. Step 2: Convert to fraction form
   81,063.94/121,601.72 = 31,144.04/x
3. Step 3: Cross multiply
   81,063.94x = 121,601.72 × 31,144.04
4. Step 4: Simplify right side
   81,063.94x = 3,787,168,831.75
5. Step 5: Solve for x
   x = 3,787,168,831.75/81,063.94
6. Step 6: Final answer
   x = 46,718.29