Finding the Fourth Proportional to 209,265.42, 288,784.86 and 113,772.12

Step by Step Solution

1. Step 1: Write the proportion equation
   209,265.42 : 288,784.86 = 113,772.12 : x
2. Step 2: Convert to fraction form
   209,265.42/288,784.86 = 113,772.12/x
3. Step 3: Cross multiply
   209,265.42x = 288,784.86 × 113,772.12
4. Step 4: Simplify right side
   209,265.42x = 32,855,665,746.10
5. Step 5: Solve for x
   x = 32,855,665,746.10/209,265.42
6. Step 6: Final answer
   x = 157,004.75