Finding the Fourth Proportional to 259,458.54, 389,155.61 and 69,933.72

Step by Step Solution

1. Step 1: Write the proportion equation
   259,458.54 : 389,155.61 = 69,933.72 : x
2. Step 2: Convert to fraction form
   259,458.54/389,155.61 = 69,933.72/x
3. Step 3: Cross multiply
   259,458.54x = 389,155.61 × 69,933.72
4. Step 4: Simplify right side
   259,458.54x = 27,215,099,116.50
5. Step 5: Solve for x
   x = 27,215,099,116.50/259,458.54
6. Step 6: Final answer
   x = 104,891.90