Finding the Fourth Proportional to 359,146.62, 495,680.85 and 216,051.30

Step by Step Solution

1. Step 1: Write the proportion equation
   359,146.62 : 495,680.85 = 216,051.30 : x
2. Step 2: Convert to fraction form
   359,146.62/495,680.85 = 216,051.30/x
3. Step 3: Cross multiply
   359,146.62x = 495,680.85 × 216,051.30
4. Step 4: Simplify right side
   359,146.62x = 107,092,492,027.61
5. Step 5: Solve for x
   x = 107,092,492,027.61/359,146.62
6. Step 6: Final answer
   x = 298,185.99