Finding the Fourth Proportional to 139,225.61, 191,986.12 and 82,626.05

Step by Step Solution

1. Step 1: Write the proportion equation
   139,225.61 : 191,986.12 = 82,626.05 : x
2. Step 2: Convert to fraction form
   139,225.61/191,986.12 = 82,626.05/x
3. Step 3: Cross multiply
   139,225.61x = 191,986.12 × 82,626.05
4. Step 4: Simplify right side
   139,225.61x = 15,863,054,750.43
5. Step 5: Solve for x
   x = 15,863,054,750.43/139,225.61
6. Step 6: Final answer
   x = 113,937.76