Finding the Fourth Proportional to 208,294.72, 287,446.28 and 112,801.12

Step by Step Solution

1. Step 1: Write the proportion equation
   208,294.72 : 287,446.28 = 112,801.12 : x
2. Step 2: Convert to fraction form
   208,294.72/287,446.28 = 112,801.12/x
3. Step 3: Cross multiply
   208,294.72x = 287,446.28 × 112,801.12
4. Step 4: Simplify right side
   208,294.72x = 32,424,261,759.83
5. Step 5: Solve for x
   x = 32,424,261,759.83/208,294.72
6. Step 6: Final answer
   x = 155,665.31