Finding the Fourth Proportional to 53,165.59, 79,760.73 and 18,105.55

Step by Step Solution

1. Step 1: Write the proportion equation
   53,165.59 : 79,760.73 = 18,105.55 : x
2. Step 2: Convert to fraction form
   53,165.59/79,760.73 = 18,105.55/x
3. Step 3: Cross multiply
   53,165.59x = 79,760.73 × 18,105.55
4. Step 4: Simplify right side
   53,165.59x = 1,444,111,885.05
5. Step 5: Solve for x
   x = 1,444,111,885.05/53,165.59
6. Step 6: Final answer
   x = 27,162.53