Finding the Fourth Proportional to 938,078.72, 1,406,993.69 and 264,212.99

Step by Step Solution

1. Step 1: Write the proportion equation
   938,078.72 : 1,406,993.69 = 264,212.99 : x
2. Step 2: Convert to fraction form
   938,078.72/1,406,993.69 = 264,212.99/x
3. Step 3: Cross multiply
   938,078.72x = 1,406,993.69 × 264,212.99
4. Step 4: Simplify right side
   938,078.72x = 371,746,008,647.82
5. Step 5: Solve for x
   x = 371,746,008,647.82/938,078.72
6. Step 6: Final answer
   x = 396,284.45