Finding the Fourth Proportional to 677,715.31, 1,016,580.27 and 204,404.77

Step by Step Solution

1. Step 1: Write the proportion equation
   677,715.31 : 1,016,580.27 = 204,404.77 : x
2. Step 2: Convert to fraction form
   677,715.31/1,016,580.27 = 204,404.77/x
3. Step 3: Cross multiply
   677,715.31x = 1,016,580.27 × 204,404.77
4. Step 4: Simplify right side
   677,715.31x = 207,793,856,275.89
5. Step 5: Solve for x
   x = 207,793,856,275.89/677,715.31
6. Step 6: Final answer
   x = 306,609.36