Finding the Fourth Proportional to 353,300.86, 529,951.65 and 142,940.62

Step by Step Solution

1. Step 1: Write the proportion equation
   353,300.86 : 529,951.65 = 142,940.62 : x
2. Step 2: Convert to fraction form
   353,300.86/529,951.65 = 142,940.62/x
3. Step 3: Cross multiply
   353,300.86x = 529,951.65 × 142,940.62
4. Step 4: Simplify right side
   353,300.86x = 75,751,617,421.02
5. Step 5: Solve for x
   x = 75,751,617,421.02/353,300.86
6. Step 6: Final answer
   x = 214,411.08