Finding the Fourth Proportional to 695,269.28, 1,043,016.72 and 215,384.96

Step by Step Solution

1. Step 1: Write the proportion equation
   695,269.28 : 1,043,016.72 = 215,384.96 : x
2. Step 2: Convert to fraction form
   695,269.28/1,043,016.72 = 215,384.96/x
3. Step 3: Cross multiply
   695,269.28x = 1,043,016.72 × 215,384.96
4. Step 4: Simplify right side
   695,269.28x = 224,650,114,516.53
5. Step 5: Solve for x
   x = 224,650,114,516.53/695,269.28
6. Step 6: Final answer
   x = 323,112.38