Finding the Fourth Proportional to 208,395.83, 287,480.54 and 131,785.82

Step by Step Solution

1. Step 1: Write the proportion equation
   208,395.83 : 287,480.54 = 131,785.82 : x
2. Step 2: Convert to fraction form
   208,395.83/287,480.54 = 131,785.82/x
3. Step 3: Cross multiply
   208,395.83x = 287,480.54 × 131,785.82
4. Step 4: Simplify right side
   208,395.83x = 37,885,856,601.61
5. Step 5: Solve for x
   x = 37,885,856,601.61/208,395.83
6. Step 6: Final answer
   x = 181,797.58