Finding the Fourth Proportional to 139,180.37, 208,881.25 and 50,459.18

Step by Step Solution

1. Step 1: Write the proportion equation
   139,180.37 : 208,881.25 = 50,459.18 : x
2. Step 2: Convert to fraction form
   139,180.37/208,881.25 = 50,459.18/x
3. Step 3: Cross multiply
   139,180.37x = 208,881.25 × 50,459.18
4. Step 4: Simplify right side
   139,180.37x = 10,539,975,421.82
5. Step 5: Solve for x
   x = 10,539,975,421.82/139,180.37
6. Step 6: Final answer
   x = 75,728.90