Finding the Fourth Proportional to 151,871.37, 209,584.50 and 83,888.17

Step by Step Solution

1. Step 1: Write the proportion equation
   151,871.37 : 209,584.50 = 83,888.17 : x
2. Step 2: Convert to fraction form
   151,871.37/209,584.50 = 83,888.17/x
3. Step 3: Cross multiply
   151,871.37x = 209,584.50 × 83,888.17
4. Step 4: Simplify right side
   151,871.37x = 17,581,659,326.82
5. Step 5: Solve for x
   x = 17,581,659,326.82/151,871.37
6. Step 6: Final answer
   x = 115,766.78