Finding the Fourth Proportional to 87,411.81, 120,625.32 and 49,172.10

Step by Step Solution

1. Step 1: Write the proportion equation
   87,411.81 : 120,625.32 = 49,172.10 : x
2. Step 2: Convert to fraction form
   87,411.81/120,625.32 = 49,172.10/x
3. Step 3: Cross multiply
   87,411.81x = 120,625.32 × 49,172.10
4. Step 4: Simplify right side
   87,411.81x = 5,931,400,297.57
5. Step 5: Solve for x
   x = 5,931,400,297.57/87,411.81
6. Step 6: Final answer
   x = 67,855.82