Finding the Fourth Proportional to 208,857.61, 288,223.82 and 113,364.33

Step by Step Solution

1. Step 1: Write the proportion equation
   208,857.61 : 288,223.82 = 113,364.33 : x
2. Step 2: Convert to fraction form
   208,857.61/288,223.82 = 113,364.33/x
3. Step 3: Cross multiply
   208,857.61x = 288,223.82 × 113,364.33
4. Step 4: Simplify right side
   208,857.61x = 32,674,300,244.34
5. Step 5: Solve for x
   x = 32,674,300,244.34/208,857.61
6. Step 6: Final answer
   x = 156,442.95