Finding the Fourth Proportional to 209,384.52, 288,928.17 and 123,336.76

Step by Step Solution

1. Step 1: Write the proportion equation
   209,384.52 : 288,928.17 = 123,336.76 : x
2. Step 2: Convert to fraction form
   209,384.52/288,928.17 = 123,336.76/x
3. Step 3: Cross multiply
   209,384.52x = 288,928.17 × 123,336.76
4. Step 4: Simplify right side
   209,384.52x = 35,635,464,360.53
5. Step 5: Solve for x
   x = 35,635,464,360.53/209,384.52
6. Step 6: Final answer
   x = 170,191.49