Finding the Fourth Proportional to 72,957.89, 109,383.55 and 49,206.40

Step by Step Solution

1. Step 1: Write the proportion equation
   72,957.89 : 109,383.55 = 49,206.40 : x
2. Step 2: Convert to fraction form
   72,957.89/109,383.55 = 49,206.40/x
3. Step 3: Cross multiply
   72,957.89x = 109,383.55 × 49,206.40
4. Step 4: Simplify right side
   72,957.89x = 5,382,370,714.72
5. Step 5: Solve for x
   x = 5,382,370,714.72/72,957.89
6. Step 6: Final answer
   x = 73,773.66