Finding the Fourth Proportional to 282,425.31, 389,749.50 and 155,101.86

Step by Step Solution

1. Step 1: Write the proportion equation
   282,425.31 : 389,749.50 = 155,101.86 : x
2. Step 2: Convert to fraction form
   282,425.31/389,749.50 = 155,101.86/x
3. Step 3: Cross multiply
   282,425.31x = 389,749.50 × 155,101.86
4. Step 4: Simplify right side
   282,425.31x = 60,450,872,384.07
5. Step 5: Solve for x
   x = 60,450,872,384.07/282,425.31
6. Step 6: Final answer
   x = 214,041.98