Finding the Fourth Proportional to 282,410.46, 389,729.16 and 155,088.77

Step by Step Solution

1. Step 1: Write the proportion equation
   282,410.46 : 389,729.16 = 155,088.77 : x
2. Step 2: Convert to fraction form
   282,410.46/389,729.16 = 155,088.77/x
3. Step 3: Cross multiply
   282,410.46x = 389,729.16 × 155,088.77
4. Step 4: Simplify right side
   282,410.46x = 60,442,614,108.89
5. Step 5: Solve for x
   x = 60,442,614,108.89/282,410.46
6. Step 6: Final answer
   x = 214,023.99