Finding the Fourth Proportional to 562,870.84, 776,746.72 and 321,149.02

Step by Step Solution

1. Step 1: Write the proportion equation
   562,870.84 : 776,746.72 = 321,149.02 : x
2. Step 2: Convert to fraction form
   562,870.84/776,746.72 = 321,149.02/x
3. Step 3: Cross multiply
   562,870.84x = 776,746.72 × 321,149.02
4. Step 4: Simplify right side
   562,870.84x = 249,451,447,916.21
5. Step 5: Solve for x
   x = 249,451,447,916.21/562,870.84
6. Step 6: Final answer
   x = 443,177.07