Finding the Fourth Proportional to 742,105.56, 1,111,674.42 and 342,198.84

Step by Step Solution

1. Step 1: Write the proportion equation
   742,105.56 : 1,111,674.42 = 342,198.84 : x
2. Step 2: Convert to fraction form
   742,105.56/1,111,674.42 = 342,198.84/x
3. Step 3: Cross multiply
   742,105.56x = 1,111,674.42 × 342,198.84
4. Step 4: Simplify right side
   742,105.56x = 380,413,696,981.67
5. Step 5: Solve for x
   x = 380,413,696,981.67/742,105.56
6. Step 6: Final answer
   x = 512,614.00