Finding the Fourth Proportional to 441,112.69, 661,606.45 and 141,554.53

Step by Step Solution

1. Step 1: Write the proportion equation
   441,112.69 : 661,606.45 = 141,554.53 : x
2. Step 2: Convert to fraction form
   441,112.69/661,606.45 = 141,554.53/x
3. Step 3: Cross multiply
   441,112.69x = 661,606.45 × 141,554.53
4. Step 4: Simplify right side
   441,112.69x = 93,653,390,074.72
5. Step 5: Solve for x
   x = 93,653,390,074.72/441,112.69
6. Step 6: Final answer
   x = 212,311.71