Finding the Fourth Proportional to 462,105.72, 637,685.76 and 258,155.76

Step by Step Solution

1. Step 1: Write the proportion equation
   462,105.72 : 637,685.76 = 258,155.76 : x
2. Step 2: Convert to fraction form
   462,105.72/637,685.76 = 258,155.76/x
3. Step 3: Cross multiply
   462,105.72x = 637,685.76 × 258,155.76
4. Step 4: Simplify right side
   462,105.72x = 164,622,252,013.98
5. Step 5: Solve for x
   x = 164,622,252,013.98/462,105.72
6. Step 6: Final answer
   x = 356,243.70