Finding the Fourth Proportional to 359,055.96, 495,498.24 and 215,898

Step by Step Solution

1. Step 1: Write the proportion equation
   359,055.96 : 495,498.24 = 215,898 : x
2. Step 2: Convert to fraction form
   359,055.96/495,498.24 = 215,898/x
3. Step 3: Cross multiply
   359,055.96x = 495,498.24 × 215,898
4. Step 4: Simplify right side
   359,055.96x = 106,977,079,019.52
5. Step 5: Solve for x
   x = 106,977,079,019.52/359,055.96
6. Step 6: Final answer
   x = 297,939.85