Finding the Fourth Proportional to 408,031.58, 612,046.89 and 141,792.12

Step by Step Solution

1. Step 1: Write the proportion equation
   408,031.58 : 612,046.89 = 141,792.12 : x
2. Step 2: Convert to fraction form
   408,031.58/612,046.89 = 141,792.12/x
3. Step 3: Cross multiply
   408,031.58x = 612,046.89 × 141,792.12
4. Step 4: Simplify right side
   408,031.58x = 86,783,426,072.51
5. Step 5: Solve for x
   x = 86,783,426,072.51/408,031.58
6. Step 6: Final answer
   x = 212,688.01