Finding the Fourth Proportional to 647,156.52, 971,172.18 and 226,436.04

Step by Step Solution

1. Step 1: Write the proportion equation
   647,156.52 : 971,172.18 = 226,436.04 : x
2. Step 2: Convert to fraction form
   647,156.52/971,172.18 = 226,436.04/x
3. Step 3: Cross multiply
   647,156.52x = 971,172.18 × 226,436.04
4. Step 4: Simplify right side
   647,156.52x = 219,908,382,597.37
5. Step 5: Solve for x
   x = 219,908,382,597.37/647,156.52
6. Step 6: Final answer
   x = 339,807.10