Finding the Fourth Proportional to 846,588.76, 1,269,890.18 and 215,501.40

Step by Step Solution

1. Step 1: Write the proportion equation
   846,588.76 : 1,269,890.18 = 215,501.40 : x
2. Step 2: Convert to fraction form
   846,588.76/1,269,890.18 = 215,501.40/x
3. Step 3: Cross multiply
   846,588.76x = 1,269,890.18 × 215,501.40
4. Step 4: Simplify right side
   846,588.76x = 273,663,111,636.25
5. Step 5: Solve for x
   x = 273,663,111,636.25/846,588.76
6. Step 6: Final answer
   x = 323,253.89