Finding the Fourth Proportional to 259,628.32, 389,442.56 and 109,829.76

Step by Step Solution

1. Step 1: Write the proportion equation
   259,628.32 : 389,442.56 = 109,829.76 : x
2. Step 2: Convert to fraction form
   259,628.32/389,442.56 = 109,829.76/x
3. Step 3: Cross multiply
   259,628.32x = 389,442.56 × 109,829.76
4. Step 4: Simplify right side
   259,628.32x = 42,772,382,898.59
5. Step 5: Solve for x
   x = 42,772,382,898.59/259,628.32
6. Step 6: Final answer
   x = 164,744.67