Finding the Fourth Proportional to 783,868.48, 1,175,676.76 and 215,116.72

Step by Step Solution

1. Step 1: Write the proportion equation
   783,868.48 : 1,175,676.76 = 215,116.72 : x
2. Step 2: Convert to fraction form
   783,868.48/1,175,676.76 = 215,116.72/x
3. Step 3: Cross multiply
   783,868.48x = 1,175,676.76 × 215,116.72
4. Step 4: Simplify right side
   783,868.48x = 252,907,728,391.43
5. Step 5: Solve for x
   x = 252,907,728,391.43/783,868.48
6. Step 6: Final answer
   x = 322,640.51