Finding the Fourth Proportional to 139,868.46, 209,823.36 and 51,101.22

Step by Step Solution

1. Step 1: Write the proportion equation
   139,868.46 : 209,823.36 = 51,101.22 : x
2. Step 2: Convert to fraction form
   139,868.46/209,823.36 = 51,101.22/x
3. Step 3: Cross multiply
   139,868.46x = 209,823.36 × 51,101.22
4. Step 4: Simplify right side
   139,868.46x = 10,722,229,680.50
5. Step 5: Solve for x
   x = 10,722,229,680.50/139,868.46
6. Step 6: Final answer
   x = 76,659.38