Finding the Fourth Proportional to 87,443.69, 120,380.45 and 83,426.63

Step by Step Solution

1. Step 1: Write the proportion equation
   87,443.69 : 120,380.45 = 83,426.63 : x
2. Step 2: Convert to fraction form
   87,443.69/120,380.45 = 83,426.63/x
3. Step 3: Cross multiply
   87,443.69x = 120,380.45 × 83,426.63
4. Step 4: Simplify right side
   87,443.69x = 10,042,934,242.35
5. Step 5: Solve for x
   x = 10,042,934,242.35/87,443.69
6. Step 6: Final answer
   x = 114,850.31