Finding the Fourth Proportional to 139,527.30, 209,164.37 and 50,718.08

Step by Step Solution

1. Step 1: Write the proportion equation
   139,527.30 : 209,164.37 = 50,718.08 : x
2. Step 2: Convert to fraction form
   139,527.30/209,164.37 = 50,718.08/x
3. Step 3: Cross multiply
   139,527.30x = 209,164.37 × 50,718.08
4. Step 4: Simplify right side
   139,527.30x = 10,608,415,250.81
5. Step 5: Solve for x
   x = 10,608,415,250.81/139,527.30
6. Step 6: Final answer
   x = 76,031.11