Finding the Fourth Proportional to 151,947, 209,686.86 and 84,879

Step by Step Solution

1. Step 1: Write the proportion equation
   151,947 : 209,686.86 = 84,879 : x
2. Step 2: Convert to fraction form
   151,947/209,686.86 = 84,879/x
3. Step 3: Cross multiply
   151,947x = 209,686.86 × 84,879
4. Step 4: Simplify right side
   151,947x = 17,798,010,989.94
5. Step 5: Solve for x
   x = 17,798,010,989.94/151,947
6. Step 6: Final answer
   x = 117,133.02