Finding the Fourth Proportional to 661,848.35, 993,052.52 and 361,978.85

Step by Step Solution

1. Step 1: Write the proportion equation
   661,848.35 : 993,052.52 = 361,978.85 : x
2. Step 2: Convert to fraction form
   661,848.35/993,052.52 = 361,978.85/x
3. Step 3: Cross multiply
   661,848.35x = 993,052.52 × 361,978.85
4. Step 4: Simplify right side
   661,848.35x = 359,464,007,369.31
5. Step 5: Solve for x
   x = 359,464,007,369.31/661,848.35
6. Step 6: Final answer
   x = 543,121.41