Finding the Fourth Proportional to 642,404.81, 963,233.70 and 243,076.43

Step by Step Solution

1. Step 1: Write the proportion equation
   642,404.81 : 963,233.70 = 243,076.43 : x
2. Step 2: Convert to fraction form
   642,404.81/963,233.70 = 243,076.43/x
3. Step 3: Cross multiply
   642,404.81x = 963,233.70 × 243,076.43
4. Step 4: Simplify right side
   642,404.81x = 234,139,404,235.52
5. Step 5: Solve for x
   x = 234,139,404,235.52/642,404.81
6. Step 6: Final answer
   x = 364,473.31