Finding the Fourth Proportional to 263,667.58, 363,861.59 and 142,809.86

Step by Step Solution

1. Step 1: Write the proportion equation
   263,667.58 : 363,861.59 = 142,809.86 : x
2. Step 2: Convert to fraction form
   263,667.58/363,861.59 = 142,809.86/x
3. Step 3: Cross multiply
   263,667.58x = 363,861.59 × 142,809.86
4. Step 4: Simplify right side
   263,667.58x = 51,963,022,922.88
5. Step 5: Solve for x
   x = 51,963,022,922.88/263,667.58
6. Step 6: Final answer
   x = 197,077.79