Finding the Fourth Proportional to 329,007.30, 493,626.15 and 142,152.90

Step by Step Solution

1. Step 1: Write the proportion equation
   329,007.30 : 493,626.15 = 142,152.90 : x
2. Step 2: Convert to fraction form
   329,007.30/493,626.15 = 142,152.90/x
3. Step 3: Cross multiply
   329,007.30x = 493,626.15 × 142,152.90
4. Step 4: Simplify right side
   329,007.30x = 70,170,388,738.34
5. Step 5: Solve for x
   x = 70,170,388,738.34/329,007.30
6. Step 6: Final answer
   x = 213,279.12