Finding the Fourth Proportional to 399,339.54, 598,659.48 and 150,196.50

Step by Step Solution

1. Step 1: Write the proportion equation
   399,339.54 : 598,659.48 = 150,196.50 : x
2. Step 2: Convert to fraction form
   399,339.54/598,659.48 = 150,196.50/x
3. Step 3: Cross multiply
   399,339.54x = 598,659.48 × 150,196.50
4. Step 4: Simplify right side
   399,339.54x = 89,916,558,587.82
5. Step 5: Solve for x
   x = 89,916,558,587.82/399,339.54
6. Step 6: Final answer
   x = 225,163.17