Finding the Fourth Proportional to 55,757.69, 83,618.91 and 18,311.59

Step by Step Solution

1. Step 1: Write the proportion equation
   55,757.69 : 83,618.91 = 18,311.59 : x
2. Step 2: Convert to fraction form
   55,757.69/83,618.91 = 18,311.59/x
3. Step 3: Cross multiply
   55,757.69x = 83,618.91 × 18,311.59
4. Step 4: Simplify right side
   55,757.69x = 1,531,194,686.51
5. Step 5: Solve for x
   x = 1,531,194,686.51/55,757.69
6. Step 6: Final answer
   x = 27,461.59