Finding the Fourth Proportional to 443,346.91, 611,833.31 and 242,142.91

Step by Step Solution

1. Step 1: Write the proportion equation
   443,346.91 : 611,833.31 = 242,142.91 : x
2. Step 2: Convert to fraction form
   443,346.91/611,833.31 = 242,142.91/x
3. Step 3: Cross multiply
   443,346.91x = 611,833.31 × 242,142.91
4. Step 4: Simplify right side
   443,346.91x = 148,151,098,118.33
5. Step 5: Solve for x
   x = 148,151,098,118.33/443,346.91
6. Step 6: Final answer
   x = 334,165.18