Finding the Fourth Proportional to 219,667.75, 303,131.87 and 129,033

Step by Step Solution

1. Step 1: Write the proportion equation
   219,667.75 : 303,131.87 = 129,033 : x
2. Step 2: Convert to fraction form
   219,667.75/303,131.87 = 129,033/x
3. Step 3: Cross multiply
   219,667.75x = 303,131.87 × 129,033
4. Step 4: Simplify right side
   219,667.75x = 39,114,014,420.42
5. Step 5: Solve for x
   x = 39,114,014,420.42/219,667.75
6. Step 6: Final answer
   x = 178,059.89