Finding the Fourth Proportional to 367,061.05, 550,427.55 and 142,346.80

Step by Step Solution

1. Step 1: Write the proportion equation
   367,061.05 : 550,427.55 = 142,346.80 : x
2. Step 2: Convert to fraction form
   367,061.05/550,427.55 = 142,346.80/x
3. Step 3: Cross multiply
   367,061.05x = 550,427.55 × 142,346.80
4. Step 4: Simplify right side
   367,061.05x = 78,351,600,374.34
5. Step 5: Solve for x
   x = 78,351,600,374.34/367,061.05
6. Step 6: Final answer
   x = 213,456.59