Finding the Fourth Proportional to 379,016.61, 523,041.46 and 209,249.52

Step by Step Solution

1. Step 1: Write the proportion equation
   379,016.61 : 523,041.46 = 209,249.52 : x
2. Step 2: Convert to fraction form
   379,016.61/523,041.46 = 209,249.52/x
3. Step 3: Cross multiply
   379,016.61x = 523,041.46 × 209,249.52
4. Step 4: Simplify right side
   379,016.61x = 109,446,174,445.10
5. Step 5: Solve for x
   x = 109,446,174,445.10/379,016.61
6. Step 6: Final answer
   x = 288,763.53