Finding the Fourth Proportional to 208,015.62, 287,061.43 and 112,522.31

Step by Step Solution

1. Step 1: Write the proportion equation
   208,015.62 : 287,061.43 = 112,522.31 : x
2. Step 2: Convert to fraction form
   208,015.62/287,061.43 = 112,522.31/x
3. Step 3: Cross multiply
   208,015.62x = 287,061.43 × 112,522.31
4. Step 4: Simplify right side
   208,015.62x = 32,300,815,215.50
5. Step 5: Solve for x
   x = 32,300,815,215.50/208,015.62
6. Step 6: Final answer
   x = 155,280.72