Finding the Fourth Proportional to 87,690.69, 120,984.11 and 49,445.43

Step by Step Solution

1. Step 1: Write the proportion equation
   87,690.69 : 120,984.11 = 49,445.43 : x
2. Step 2: Convert to fraction form
   87,690.69/120,984.11 = 49,445.43/x
3. Step 3: Cross multiply
   87,690.69x = 120,984.11 × 49,445.43
4. Step 4: Simplify right side
   87,690.69x = 5,982,111,094.89
5. Step 5: Solve for x
   x = 5,982,111,094.89/87,690.69
6. Step 6: Final answer
   x = 68,218.31