Finding the Fourth Proportional to 243,075.72, 335,337.69 and 231,819.50

Step by Step Solution

1. Step 1: Write the proportion equation
   243,075.72 : 335,337.69 = 231,819.50 : x
2. Step 2: Convert to fraction form
   243,075.72/335,337.69 = 231,819.50/x
3. Step 3: Cross multiply
   243,075.72x = 335,337.69 × 231,819.50
4. Step 4: Simplify right side
   243,075.72x = 77,737,815,626.96
5. Step 5: Solve for x
   x = 77,737,815,626.96/243,075.72
6. Step 6: Final answer
   x = 319,809.05