Finding the Fourth Proportional to 151,958.16, 209,691.78 and 83,974.50

Step by Step Solution

1. Step 1: Write the proportion equation
   151,958.16 : 209,691.78 = 83,974.50 : x
2. Step 2: Convert to fraction form
   151,958.16/209,691.78 = 83,974.50/x
3. Step 3: Cross multiply
   151,958.16x = 209,691.78 × 83,974.50
4. Step 4: Simplify right side
   151,958.16x = 17,608,762,379.61
5. Step 5: Solve for x
   x = 17,608,762,379.61/151,958.16
6. Step 6: Final answer
   x = 115,879.02