Finding the Fourth Proportional to 307,062.55, 423,747.20 and 178,026.10

Step by Step Solution

1. Step 1: Write the proportion equation
   307,062.55 : 423,747.20 = 178,026.10 : x
2. Step 2: Convert to fraction form
   307,062.55/423,747.20 = 178,026.10/x
3. Step 3: Cross multiply
   307,062.55x = 423,747.20 × 178,026.10
4. Step 4: Simplify right side
   307,062.55x = 75,438,061,401.92
5. Step 5: Solve for x
   x = 75,438,061,401.92/307,062.55
6. Step 6: Final answer
   x = 245,676.53