Finding the Fourth Proportional to 298,799.05, 412,330.70 and 162,830.10

Step by Step Solution

1. Step 1: Write the proportion equation
   298,799.05 : 412,330.70 = 162,830.10 : x
2. Step 2: Convert to fraction form
   298,799.05/412,330.70 = 162,830.10/x
3. Step 3: Cross multiply
   298,799.05x = 412,330.70 × 162,830.10
4. Step 4: Simplify right side
   298,799.05x = 67,139,849,114.07
5. Step 5: Solve for x
   x = 67,139,849,114.07/298,799.05
6. Step 6: Final answer
   x = 224,699.00