Finding the Fourth Proportional to 400,333.50, 552,467.25 and 219,061.31

Step by Step Solution

1. Step 1: Write the proportion equation
   400,333.50 : 552,467.25 = 219,061.31 : x
2. Step 2: Convert to fraction form
   400,333.50/552,467.25 = 219,061.31/x
3. Step 3: Cross multiply
   400,333.50x = 552,467.25 × 219,061.31
4. Step 4: Simplify right side
   400,333.50x = 121,024,196,754.76
5. Step 5: Solve for x
   x = 121,024,196,754.76/400,333.50
6. Step 6: Final answer
   x = 302,308.44