Finding the Fourth Proportional to 144,482.60, 199,464.72 and 87,132.17

Step by Step Solution

1. Step 1: Write the proportion equation
   144,482.60 : 199,464.72 = 87,132.17 : x
2. Step 2: Convert to fraction form
   144,482.60/199,464.72 = 87,132.17/x
3. Step 3: Cross multiply
   144,482.60x = 199,464.72 × 87,132.17
4. Step 4: Simplify right side
   144,482.60x = 17,379,793,892.04
5. Step 5: Solve for x
   x = 17,379,793,892.04/144,482.60
6. Step 6: Final answer
   x = 120,289.87