Finding the Fourth Proportional to 353,061.88, 487,113.42 and 219,003.64

Step by Step Solution

1. Step 1: Write the proportion equation
   353,061.88 : 487,113.42 = 219,003.64 : x
2. Step 2: Convert to fraction form
   353,061.88/487,113.42 = 219,003.64/x
3. Step 3: Cross multiply
   353,061.88x = 487,113.42 × 219,003.64
4. Step 4: Simplify right side
   353,061.88x = 106,679,612,072.85
5. Step 5: Solve for x
   x = 106,679,612,072.85/353,061.88
6. Step 6: Final answer
   x = 302,155.57