Finding the Fourth Proportional to 422,078.72, 582,483.29 and 231,093.45

Step by Step Solution

1. Step 1: Write the proportion equation
   422,078.72 : 582,483.29 = 231,093.45 : x
2. Step 2: Convert to fraction form
   422,078.72/582,483.29 = 231,093.45/x
3. Step 3: Cross multiply
   422,078.72x = 582,483.29 × 231,093.45
4. Step 4: Simplify right side
   422,078.72x = 134,608,071,897.98
5. Step 5: Solve for x
   x = 134,608,071,897.98/422,078.72
6. Step 6: Final answer
   x = 318,916.99