Finding the Fourth Proportional to 300,554.91, 450,116.73 and 173,928.15

Step by Step Solution

1. Step 1: Write the proportion equation
   300,554.91 : 450,116.73 = 173,928.15 : x
2. Step 2: Convert to fraction form
   300,554.91/450,116.73 = 173,928.15/x
3. Step 3: Cross multiply
   300,554.91x = 450,116.73 × 173,928.15
4. Step 4: Simplify right side
   300,554.91x = 78,287,970,132.95
5. Step 5: Solve for x
   x = 78,287,970,132.95/300,554.91
6. Step 6: Final answer
   x = 260,478.09