Finding the Fourth Proportional to 53,704.72, 80,536.38 and 20,407.24

Step by Step Solution

1. Step 1: Write the proportion equation
   53,704.72 : 80,536.38 = 20,407.24 : x
2. Step 2: Convert to fraction form
   53,704.72/80,536.38 = 20,407.24/x
3. Step 3: Cross multiply
   53,704.72x = 80,536.38 × 20,407.24
4. Step 4: Simplify right side
   53,704.72x = 1,643,525,235.39
5. Step 5: Solve for x
   x = 1,643,525,235.39/53,704.72
6. Step 6: Final answer
   x = 30,602.99