Finding the Fourth Proportional to 209,002.76, 288,441.59 and 118,374.85

Step by Step Solution

1. Step 1: Write the proportion equation
   209,002.76 : 288,441.59 = 118,374.85 : x
2. Step 2: Convert to fraction form
   209,002.76/288,441.59 = 118,374.85/x
3. Step 3: Cross multiply
   209,002.76x = 288,441.59 × 118,374.85
4. Step 4: Simplify right side
   209,002.76x = 34,144,229,524.84
5. Step 5: Solve for x
   x = 34,144,229,524.84/209,002.76
6. Step 6: Final answer
   x = 163,367.36