Finding the Fourth Proportional to 35,454.10, 53,164.23 and 20,667.28

Step by Step Solution

1. Step 1: Write the proportion equation
   35,454.10 : 53,164.23 = 20,667.28 : x
2. Step 2: Convert to fraction form
   35,454.10/53,164.23 = 20,667.28/x
3. Step 3: Cross multiply
   35,454.10x = 53,164.23 × 20,667.28
4. Step 4: Simplify right side
   35,454.10x = 1,098,760,027.39
5. Step 5: Solve for x
   x = 1,098,760,027.39/35,454.10
6. Step 6: Final answer
   x = 30,991.06