Finding the Fourth Proportional to 367,068.30, 550,438.43 and 142,354.05

Step by Step Solution

1. Step 1: Write the proportion equation
   367,068.30 : 550,438.43 = 142,354.05 : x
2. Step 2: Convert to fraction form
   367,068.30/550,438.43 = 142,354.05/x
3. Step 3: Cross multiply
   367,068.30x = 550,438.43 × 142,354.05
4. Step 4: Simplify right side
   367,068.30x = 78,357,139,074.37
5. Step 5: Solve for x
   x = 78,357,139,074.37/367,068.30
6. Step 6: Final answer
   x = 213,467.46