Finding the Fourth Proportional to 73,004.36, 109,506.72 and 20,413.76

Step by Step Solution

1. Step 1: Write the proportion equation
   73,004.36 : 109,506.72 = 20,413.76 : x
2. Step 2: Convert to fraction form
   73,004.36/109,506.72 = 20,413.76/x
3. Step 3: Cross multiply
   73,004.36x = 109,506.72 × 20,413.76
4. Step 4: Simplify right side
   73,004.36x = 2,235,443,900.47
5. Step 5: Solve for x
   x = 2,235,443,900.47/73,004.36
6. Step 6: Final answer
   x = 30,620.69