Finding the Fourth Proportional to 209,224.32, 288,727.72 and 113,730.72

Step by Step Solution

1. Step 1: Write the proportion equation
   209,224.32 : 288,727.72 = 113,730.72 : x
2. Step 2: Convert to fraction form
   209,224.32/288,727.72 = 113,730.72/x
3. Step 3: Cross multiply
   209,224.32x = 288,727.72 × 113,730.72
4. Step 4: Simplify right side
   209,224.32x = 32,837,211,479.56
5. Step 5: Solve for x
   x = 32,837,211,479.56/209,224.32
6. Step 6: Final answer
   x = 156,947.39