Finding the Fourth Proportional to 209,037.72, 288,477.42 and 113,549.88

Step by Step Solution

1. Step 1: Write the proportion equation
   209,037.72 : 288,477.42 = 113,549.88 : x
2. Step 2: Convert to fraction form
   209,037.72/288,477.42 = 113,549.88/x
3. Step 3: Cross multiply
   209,037.72x = 288,477.42 × 113,549.88
4. Step 4: Simplify right side
   209,037.72x = 32,756,576,423.71
5. Step 5: Solve for x
   x = 32,756,576,423.71/209,037.72
6. Step 6: Final answer
   x = 156,701.75