Finding the Fourth Proportional to 188,672.28, 260,371.78 and 103,789.34

Step by Step Solution

1. Step 1: Write the proportion equation
   188,672.28 : 260,371.78 = 103,789.34 : x
2. Step 2: Convert to fraction form
   188,672.28/260,371.78 = 103,789.34/x
3. Step 3: Cross multiply
   188,672.28x = 260,371.78 × 103,789.34
4. Step 4: Simplify right side
   188,672.28x = 27,023,815,200.83
5. Step 5: Solve for x
   x = 27,023,815,200.83/188,672.28
6. Step 6: Final answer
   x = 143,231.51