Finding the Fourth Proportional to 208,591.88, 287,856.79 and 113,098.55

Step by Step Solution

1. Step 1: Write the proportion equation
   208,591.88 : 287,856.79 = 113,098.55 : x
2. Step 2: Convert to fraction form
   208,591.88/287,856.79 = 113,098.55/x
3. Step 3: Cross multiply
   208,591.88x = 287,856.79 × 113,098.55
4. Step 4: Simplify right side
   208,591.88x = 32,556,183,834.62
5. Step 5: Solve for x
   x = 32,556,183,834.62/208,591.88
6. Step 6: Final answer
   x = 156,075.99