Finding the Fourth Proportional to 647,749.42, 971,748.67 and 248,359.05

Step by Step Solution

1. Step 1: Write the proportion equation
   647,749.42 : 971,748.67 = 248,359.05 : x
2. Step 2: Convert to fraction form
   647,749.42/971,748.67 = 248,359.05/x
3. Step 3: Cross multiply
   647,749.42x = 971,748.67 × 248,359.05
4. Step 4: Simplify right side
   647,749.42x = 241,342,575,706.89
5. Step 5: Solve for x
   x = 241,342,575,706.89/647,749.42
6. Step 6: Final answer
   x = 372,586.32