Finding the Fourth Proportional to 726,181.08, 1,002,059.69 and 420,196.43

Step by Step Solution

1. Step 1: Write the proportion equation
   726,181.08 : 1,002,059.69 = 420,196.43 : x
2. Step 2: Convert to fraction form
   726,181.08/1,002,059.69 = 420,196.43/x
3. Step 3: Cross multiply
   726,181.08x = 1,002,059.69 × 420,196.43
4. Step 4: Simplify right side
   726,181.08x = 421,061,897,273.63
5. Step 5: Solve for x
   x = 421,061,897,273.63/726,181.08
6. Step 6: Final answer
   x = 579,830.44