Finding the Fourth Proportional to 72,508.13, 108,767.38 and 30,345.76

Step by Step Solution

1. Step 1: Write the proportion equation
   72,508.13 : 108,767.38 = 30,345.76 : x
2. Step 2: Convert to fraction form
   72,508.13/108,767.38 = 30,345.76/x
3. Step 3: Cross multiply
   72,508.13x = 108,767.38 × 30,345.76
4. Step 4: Simplify right side
   72,508.13x = 3,300,628,809.31
5. Step 5: Solve for x
   x = 3,300,628,809.31/72,508.13
6. Step 6: Final answer
   x = 45,520.81