Finding the Fourth Proportional to 359,150.62, 495,686.37 and 216,055.30

Step by Step Solution

1. Step 1: Write the proportion equation
   359,150.62 : 495,686.37 = 216,055.30 : x
2. Step 2: Convert to fraction form
   359,150.62/495,686.37 = 216,055.30/x
3. Step 3: Cross multiply
   359,150.62x = 495,686.37 × 216,055.30
4. Step 4: Simplify right side
   359,150.62x = 107,095,667,376.26
5. Step 5: Solve for x
   x = 107,095,667,376.26/359,150.62
6. Step 6: Final answer
   x = 298,191.51