Finding the Fourth Proportional to 201,667.60, 302,598.60 and 142,375.60

Step by Step Solution

1. Step 1: Write the proportion equation
   201,667.60 : 302,598.60 = 142,375.60 : x
2. Step 2: Convert to fraction form
   201,667.60/302,598.60 = 142,375.60/x
3. Step 3: Cross multiply
   201,667.60x = 302,598.60 × 142,375.60
4. Step 4: Simplify right side
   201,667.60x = 43,082,657,234.16
5. Step 5: Solve for x
   x = 43,082,657,234.16/201,667.60
6. Step 6: Final answer
   x = 213,632.02