Finding the Fourth Proportional to 70,482.79, 105,722.43 and 20,563.33

Step by Step Solution

1. Step 1: Write the proportion equation
   70,482.79 : 105,722.43 = 20,563.33 : x
2. Step 2: Convert to fraction form
   70,482.79/105,722.43 = 20,563.33/x
3. Step 3: Cross multiply
   70,482.79x = 105,722.43 × 20,563.33
4. Step 4: Simplify right side
   70,482.79x = 2,174,004,804.88
5. Step 5: Solve for x
   x = 2,174,004,804.88/70,482.79
6. Step 6: Final answer
   x = 30,844.48