Finding the Fourth Proportional to 72,828.06, 109,319.85 and 31,304.22

Step by Step Solution

1. Step 1: Write the proportion equation
   72,828.06 : 109,319.85 = 31,304.22 : x
2. Step 2: Convert to fraction form
   72,828.06/109,319.85 = 31,304.22/x
3. Step 3: Cross multiply
   72,828.06x = 109,319.85 × 31,304.22
4. Step 4: Simplify right side
   72,828.06x = 3,422,172,634.77
5. Step 5: Solve for x
   x = 3,422,172,634.77/72,828.06
6. Step 6: Final answer
   x = 46,989.75