Finding the Fourth Proportional to 147,931.50, 204,145.48 and 80,863.50

Step by Step Solution

1. Step 1: Write the proportion equation
   147,931.50 : 204,145.48 = 80,863.50 : x
2. Step 2: Convert to fraction form
   147,931.50/204,145.48 = 80,863.50/x
3. Step 3: Cross multiply
   147,931.50x = 204,145.48 × 80,863.50
4. Step 4: Simplify right side
   147,931.50x = 16,507,918,021.98
5. Step 5: Solve for x
   x = 16,507,918,021.98/147,931.50
6. Step 6: Final answer
   x = 111,591.64