Finding the Fourth Proportional to 35,061.12, 48,390.48 and 20,720.34

Step by Step Solution

1. Step 1: Write the proportion equation
   35,061.12 : 48,390.48 = 20,720.34 : x
2. Step 2: Convert to fraction form
   35,061.12/48,390.48 = 20,720.34/x
3. Step 3: Cross multiply
   35,061.12x = 48,390.48 × 20,720.34
4. Step 4: Simplify right side
   35,061.12x = 1,002,667,198.36
5. Step 5: Solve for x
   x = 1,002,667,198.36/35,061.12
6. Step 6: Final answer
   x = 28,597.69