Finding the Fourth Proportional to 208,363.65, 287,540.82 and 112,870.50

Step by Step Solution

1. Step 1: Write the proportion equation
   208,363.65 : 287,540.82 = 112,870.50 : x
2. Step 2: Convert to fraction form
   208,363.65/287,540.82 = 112,870.50/x
3. Step 3: Cross multiply
   208,363.65x = 287,540.82 × 112,870.50
4. Step 4: Simplify right side
   208,363.65x = 32,454,876,123.81
5. Step 5: Solve for x
   x = 32,454,876,123.81/208,363.65
6. Step 6: Final answer
   x = 155,760.74