Finding the Fourth Proportional to 282,422.50, 389,749.83 and 155,100.83

Step by Step Solution

1. Step 1: Write the proportion equation
   282,422.50 : 389,749.83 = 155,100.83 : x
2. Step 2: Convert to fraction form
   282,422.50/389,749.83 = 155,100.83/x
3. Step 3: Cross multiply
   282,422.50x = 389,749.83 × 155,100.83
4. Step 4: Simplify right side
   282,422.50x = 60,450,519,594.98
5. Step 5: Solve for x
   x = 60,450,519,594.98/282,422.50
6. Step 6: Final answer
   x = 214,042.86