Finding the Fourth Proportional to 151,650.72, 209,278.71 and 83,668.50

Step by Step Solution

1. Step 1: Write the proportion equation
   151,650.72 : 209,278.71 = 83,668.50 : x
2. Step 2: Convert to fraction form
   151,650.72/209,278.71 = 83,668.50/x
3. Step 3: Cross multiply
   151,650.72x = 209,278.71 × 83,668.50
4. Step 4: Simplify right side
   151,650.72x = 17,510,035,747.64
5. Step 5: Solve for x
   x = 17,510,035,747.64/151,650.72
6. Step 6: Final answer
   x = 115,462.93