Finding the Fourth Proportional to 139,665.06, 209,370.51 and 50,898.33

Step by Step Solution

1. Step 1: Write the proportion equation
   139,665.06 : 209,370.51 = 50,898.33 : x
2. Step 2: Convert to fraction form
   139,665.06/209,370.51 = 50,898.33/x
3. Step 3: Cross multiply
   139,665.06x = 209,370.51 × 50,898.33
4. Step 4: Simplify right side
   139,665.06x = 10,656,609,310.25
5. Step 5: Solve for x
   x = 10,656,609,310.25/139,665.06
6. Step 6: Final answer
   x = 76,301.18