Finding the Fourth Proportional to 208,308.29, 287,465.17 and 112,815.37

Step by Step Solution

1. Step 1: Write the proportion equation
   208,308.29 : 287,465.17 = 112,815.37 : x
2. Step 2: Convert to fraction form
   208,308.29/287,465.17 = 112,815.37/x
3. Step 3: Cross multiply
   208,308.29x = 287,465.17 × 112,815.37
4. Step 4: Simplify right side
   208,308.29x = 32,430,488,078.34
5. Step 5: Solve for x
   x = 32,430,488,078.34/208,308.29
6. Step 6: Final answer
   x = 155,685.06