Finding the Fourth Proportional to 218,826.72, 328,238.56 and 61,056

Step by Step Solution

1. Step 1: Write the proportion equation
   218,826.72 : 328,238.56 = 61,056 : x
2. Step 2: Convert to fraction form
   218,826.72/328,238.56 = 61,056/x
3. Step 3: Cross multiply
   218,826.72x = 328,238.56 × 61,056
4. Step 4: Simplify right side
   218,826.72x = 20,040,933,519.36
5. Step 5: Solve for x
   x = 20,040,933,519.36/218,826.72
6. Step 6: Final answer
   x = 91,583.58