Finding the Fourth Proportional to 208,606.41, 287,874.09 and 113,111.10

Step by Step Solution

1. Step 1: Write the proportion equation
   208,606.41 : 287,874.09 = 113,111.10 : x
2. Step 2: Convert to fraction form
   208,606.41/287,874.09 = 113,111.10/x
3. Step 3: Cross multiply
   208,606.41x = 287,874.09 × 113,111.10
4. Step 4: Simplify right side
   208,606.41x = 32,561,754,981.40
5. Step 5: Solve for x
   x = 32,561,754,981.40/208,606.41
6. Step 6: Final answer
   x = 156,091.82