Finding the Fourth Proportional to 443,503.72, 612,035.72 and 252,517.20

Step by Step Solution

1. Step 1: Write the proportion equation
   443,503.72 : 612,035.72 = 252,517.20 : x
2. Step 2: Convert to fraction form
   443,503.72/612,035.72 = 252,517.20/x
3. Step 3: Cross multiply
   443,503.72x = 612,035.72 × 252,517.20
4. Step 4: Simplify right side
   443,503.72x = 154,549,546,314.38
5. Step 5: Solve for x
   x = 154,549,546,314.38/443,503.72
6. Step 6: Final answer
   x = 348,474.07