Finding the Fourth Proportional to 124,061.78, 186,022.20 and 84,666.62

Step by Step Solution

1. Step 1: Write the proportion equation
   124,061.78 : 186,022.20 = 84,666.62 : x
2. Step 2: Convert to fraction form
   124,061.78/186,022.20 = 84,666.62/x
3. Step 3: Cross multiply
   124,061.78x = 186,022.20 × 84,666.62
4. Step 4: Simplify right side
   124,061.78x = 15,749,870,918.96
5. Step 5: Solve for x
   x = 15,749,870,918.96/124,061.78
6. Step 6: Final answer
   x = 126,951.84