Finding the Fourth Proportional to 72,810.48, 109,258.16 and 30,687.98

Step by Step Solution

1. Step 1: Write the proportion equation
   72,810.48 : 109,258.16 = 30,687.98 : x
2. Step 2: Convert to fraction form
   72,810.48/109,258.16 = 30,687.98/x
3. Step 3: Cross multiply
   72,810.48x = 109,258.16 × 30,687.98
4. Step 4: Simplify right side
   72,810.48x = 3,352,912,228.92
5. Step 5: Solve for x
   x = 3,352,912,228.92/72,810.48
6. Step 6: Final answer
   x = 46,049.86