Finding the Fourth Proportional to 53,180.72, 79,771.34 and 13,735.10

Step by Step Solution

1. Step 1: Write the proportion equation
   53,180.72 : 79,771.34 = 13,735.10 : x
2. Step 2: Convert to fraction form
   53,180.72/79,771.34 = 13,735.10/x
3. Step 3: Cross multiply
   53,180.72x = 79,771.34 × 13,735.10
4. Step 4: Simplify right side
   53,180.72x = 1,095,667,332.03
5. Step 5: Solve for x
   x = 1,095,667,332.03/53,180.72
6. Step 6: Final answer
   x = 20,602.72