Finding the Fourth Proportional to 53,402.24, 80,104.96 and 13,958.72

Step by Step Solution

1. Step 1: Write the proportion equation
   53,402.24 : 80,104.96 = 13,958.72 : x
2. Step 2: Convert to fraction form
   53,402.24/80,104.96 = 13,958.72/x
3. Step 3: Cross multiply
   53,402.24x = 80,104.96 × 13,958.72
4. Step 4: Simplify right side
   53,402.24x = 1,118,162,707.25
5. Step 5: Solve for x
   x = 1,118,162,707.25/53,402.24
6. Step 6: Final answer
   x = 20,938.50