Finding the Fourth Proportional to 151,947.50, 209,687.55 and 84,879.50

Step by Step Solution

1. Step 1: Write the proportion equation
   151,947.50 : 209,687.55 = 84,879.50 : x
2. Step 2: Convert to fraction form
   151,947.50/209,687.55 = 84,879.50/x
3. Step 3: Cross multiply
   151,947.50x = 209,687.55 × 84,879.50
4. Step 4: Simplify right side
   151,947.50x = 17,798,174,400.23
5. Step 5: Solve for x
   x = 17,798,174,400.23/151,947.50
6. Step 6: Final answer
   x = 117,133.71