Finding the Fourth Proportional to 421,942.18, 582,165.06 and 240,587.98

Step by Step Solution

1. Step 1: Write the proportion equation
   421,942.18 : 582,165.06 = 240,587.98 : x
2. Step 2: Convert to fraction form
   421,942.18/582,165.06 = 240,587.98/x
3. Step 3: Cross multiply
   421,942.18x = 582,165.06 × 240,587.98
4. Step 4: Simplify right side
   421,942.18x = 140,061,915,811.98
5. Step 5: Solve for x
   x = 140,061,915,811.98/421,942.18
6. Step 6: Final answer
   x = 331,945.76