Finding the Fourth Proportional to 253,300.98, 379,452.12 and 205,969.50

Step by Step Solution

1. Step 1: Write the proportion equation
   253,300.98 : 379,452.12 = 205,969.50 : x
2. Step 2: Convert to fraction form
   253,300.98/379,452.12 = 205,969.50/x
3. Step 3: Cross multiply
   253,300.98x = 379,452.12 × 205,969.50
4. Step 4: Simplify right side
   253,300.98x = 78,155,563,430.34
5. Step 5: Solve for x
   x = 78,155,563,430.34/253,300.98
6. Step 6: Final answer
   x = 308,548.21