Finding the Fourth Proportional to 673,131.50, 1,009,401.18 and 252,112.12

Step by Step Solution

1. Step 1: Write the proportion equation
   673,131.50 : 1,009,401.18 = 252,112.12 : x
2. Step 2: Convert to fraction form
   673,131.50/1,009,401.18 = 252,112.12/x
3. Step 3: Cross multiply
   673,131.50x = 1,009,401.18 × 252,112.12
4. Step 4: Simplify right side
   673,131.50x = 254,482,271,420.30
5. Step 5: Solve for x
   x = 254,482,271,420.30/673,131.50
6. Step 6: Final answer
   x = 378,057.29