Finding the Fourth Proportional to 359,081.92, 536,425.61 and 258,382.72

Step by Step Solution

1. Step 1: Write the proportion equation
   359,081.92 : 536,425.61 = 258,382.72 : x
2. Step 2: Convert to fraction form
   359,081.92/536,425.61 = 258,382.72/x
3. Step 3: Cross multiply
   359,081.92x = 536,425.61 × 258,382.72
4. Step 4: Simplify right side
   359,081.92x = 138,603,108,189.46
5. Step 5: Solve for x
   x = 138,603,108,189.46/359,081.92
6. Step 6: Final answer
   x = 385,993.00