Finding the Fourth Proportional to 72,813.54, 109,259.55 and 30,722.79

Step by Step Solution

1. Step 1: Write the proportion equation
   72,813.54 : 109,259.55 = 30,722.79 : x
2. Step 2: Convert to fraction form
   72,813.54/109,259.55 = 30,722.79/x
3. Step 3: Cross multiply
   72,813.54x = 109,259.55 × 30,722.79
4. Step 4: Simplify right side
   72,813.54x = 3,356,758,210.14
5. Step 5: Solve for x
   x = 3,356,758,210.14/72,813.54
6. Step 6: Final answer
   x = 46,100.74