Finding the Fourth Proportional to 72,641.72, 108,954.42 and 20,058.68

Step by Step Solution

1. Step 1: Write the proportion equation
   72,641.72 : 108,954.42 = 20,058.68 : x
2. Step 2: Convert to fraction form
   72,641.72/108,954.42 = 20,058.68/x
3. Step 3: Cross multiply
   72,641.72x = 108,954.42 × 20,058.68
4. Step 4: Simplify right side
   72,641.72x = 2,185,481,845.37
5. Step 5: Solve for x
   x = 2,185,481,845.37/72,641.72
6. Step 6: Final answer
   x = 30,085.77