Finding the Fourth Proportional to 87,677.15, 120,988.07 and 49,434.72

Step by Step Solution

1. Step 1: Write the proportion equation
   87,677.15 : 120,988.07 = 49,434.72 : x
2. Step 2: Convert to fraction form
   87,677.15/120,988.07 = 49,434.72/x
3. Step 3: Cross multiply
   87,677.15x = 120,988.07 × 49,434.72
4. Step 4: Simplify right side
   87,677.15x = 5,981,011,116.62
5. Step 5: Solve for x
   x = 5,981,011,116.62/87,677.15
6. Step 6: Final answer
   x = 68,216.31