Finding the Fourth Proportional to 265,665.24, 398,280.78 and 123,599.34

Step by Step Solution

1. Step 1: Write the proportion equation
   265,665.24 : 398,280.78 = 123,599.34 : x
2. Step 2: Convert to fraction form
   265,665.24/398,280.78 = 123,599.34/x
3. Step 3: Cross multiply
   265,665.24x = 398,280.78 × 123,599.34
4. Step 4: Simplify right side
   265,665.24x = 49,227,241,542.69
5. Step 5: Solve for x
   x = 49,227,241,542.69/265,665.24
6. Step 6: Final answer
   x = 185,298.01