Finding the Fourth Proportional to 158,900.63, 219,283.89 and 87,280.03

Step by Step Solution

1. Step 1: Write the proportion equation
   158,900.63 : 219,283.89 = 87,280.03 : x
2. Step 2: Convert to fraction form
   158,900.63/219,283.89 = 87,280.03/x
3. Step 3: Cross multiply
   158,900.63x = 219,283.89 × 87,280.03
4. Step 4: Simplify right side
   158,900.63x = 19,139,103,401.30
5. Step 5: Solve for x
   x = 19,139,103,401.30/158,900.63
6. Step 6: Final answer
   x = 120,447.00