Finding the Fourth Proportional to 459,446.72, 634,093.46 and 258,242.72

Step by Step Solution

1. Step 1: Write the proportion equation
   459,446.72 : 634,093.46 = 258,242.72 : x
2. Step 2: Convert to fraction form
   459,446.72/634,093.46 = 258,242.72/x
3. Step 3: Cross multiply
   459,446.72x = 634,093.46 × 258,242.72
4. Step 4: Simplify right side
   459,446.72x = 163,750,019,844.61
5. Step 5: Solve for x
   x = 163,750,019,844.61/459,446.72
6. Step 6: Final answer
   x = 356,406.98