Finding the Fourth Proportional to 151,810.12, 209,496.90 and 83,831.32

Step by Step Solution

1. Step 1: Write the proportion equation
   151,810.12 : 209,496.90 = 83,831.32 : x
2. Step 2: Convert to fraction form
   151,810.12/209,496.90 = 83,831.32/x
3. Step 3: Cross multiply
   151,810.12x = 209,496.90 × 83,831.32
4. Step 4: Simplify right side
   151,810.12x = 17,562,401,662.91
5. Step 5: Solve for x
   x = 17,562,401,662.91/151,810.12
6. Step 6: Final answer
   x = 115,686.63