Finding the Fourth Proportional to 69,908.72, 104,775.56 and 55,059

Step by Step Solution

1. Step 1: Write the proportion equation
   69,908.72 : 104,775.56 = 55,059 : x
2. Step 2: Convert to fraction form
   69,908.72/104,775.56 = 55,059/x
3. Step 3: Cross multiply
   69,908.72x = 104,775.56 × 55,059
4. Step 4: Simplify right side
   69,908.72x = 5,768,837,558.04
5. Step 5: Solve for x
   x = 5,768,837,558.04/69,908.72
6. Step 6: Final answer
   x = 82,519.57