Finding the Fourth Proportional to 359,056.96, 495,499.62 and 215,899

Step by Step Solution

1. Step 1: Write the proportion equation
   359,056.96 : 495,499.62 = 215,899 : x
2. Step 2: Convert to fraction form
   359,056.96/495,499.62 = 215,899/x
3. Step 3: Cross multiply
   359,056.96x = 495,499.62 × 215,899
4. Step 4: Simplify right side
   359,056.96x = 106,977,872,458.38
5. Step 5: Solve for x
   x = 106,977,872,458.38/359,056.96
6. Step 6: Final answer
   x = 297,941.23