Finding the Fourth Proportional to 401,123.43, 601,484.82 and 131,216.34

Step by Step Solution

1. Step 1: Write the proportion equation
   401,123.43 : 601,484.82 = 131,216.34 : x
2. Step 2: Convert to fraction form
   401,123.43/601,484.82 = 131,216.34/x
3. Step 3: Cross multiply
   401,123.43x = 601,484.82 × 131,216.34
4. Step 4: Simplify right side
   401,123.43x = 78,924,636,645.96
5. Step 5: Solve for x
   x = 78,924,636,645.96/401,123.43
6. Step 6: Final answer
   x = 196,758.98