Finding the Fourth Proportional to 139,656.06, 209,357.01 and 50,889.33

Step by Step Solution

1. Step 1: Write the proportion equation
   139,656.06 : 209,357.01 = 50,889.33 : x
2. Step 2: Convert to fraction form
   139,656.06/209,357.01 = 50,889.33/x
3. Step 3: Cross multiply
   139,656.06x = 209,357.01 × 50,889.33
4. Step 4: Simplify right side
   139,656.06x = 10,654,037,969.70
5. Step 5: Solve for x
   x = 10,654,037,969.70/139,656.06
6. Step 6: Final answer
   x = 76,287.69