Finding the Fourth Proportional to 208,591.05, 287,853.98 and 117,947.01

Step by Step Solution

1. Step 1: Write the proportion equation
   208,591.05 : 287,853.98 = 117,947.01 : x
2. Step 2: Convert to fraction form
   208,591.05/287,853.98 = 117,947.01/x
3. Step 3: Cross multiply
   208,591.05x = 287,853.98 × 117,947.01
4. Step 4: Simplify right side
   208,591.05x = 33,951,515,667.86
5. Step 5: Solve for x
   x = 33,951,515,667.86/208,591.05
6. Step 6: Final answer
   x = 162,765.93