Finding the Fourth Proportional to 209,066.82, 288,512.46 and 113,573.50

Step by Step Solution

1. Step 1: Write the proportion equation
   209,066.82 : 288,512.46 = 113,573.50 : x
2. Step 2: Convert to fraction form
   209,066.82/288,512.46 = 113,573.50/x
3. Step 3: Cross multiply
   209,066.82x = 288,512.46 × 113,573.50
4. Step 4: Simplify right side
   209,066.82x = 32,767,369,875.81
5. Step 5: Solve for x
   x = 32,767,369,875.81/209,066.82
6. Step 6: Final answer
   x = 156,731.56