Finding the Fourth Proportional to 67,164.15, 100,742.59 and 20,413.38

Step by Step Solution

1. Step 1: Write the proportion equation
   67,164.15 : 100,742.59 = 20,413.38 : x
2. Step 2: Convert to fraction form
   67,164.15/100,742.59 = 20,413.38/x
3. Step 3: Cross multiply
   67,164.15x = 100,742.59 × 20,413.38
4. Step 4: Simplify right side
   67,164.15x = 2,056,496,720.82
5. Step 5: Solve for x
   x = 2,056,496,720.82/67,164.15
6. Step 6: Final answer
   x = 30,618.96