Finding the Fourth Proportional to 359,131.96, 495,603.12 and 215,974

Step by Step Solution

1. Step 1: Write the proportion equation
   359,131.96 : 495,603.12 = 215,974 : x
2. Step 2: Convert to fraction form
   359,131.96/495,603.12 = 215,974/x
3. Step 3: Cross multiply
   359,131.96x = 495,603.12 × 215,974
4. Step 4: Simplify right side
   359,131.96x = 107,037,388,238.88
5. Step 5: Solve for x
   x = 107,037,388,238.88/359,131.96
6. Step 6: Final answer
   x = 298,044.73