Finding the Fourth Proportional to 139,100.78, 208,667.51 and 44,297.78

Step by Step Solution

1. Step 1: Write the proportion equation
   139,100.78 : 208,667.51 = 44,297.78 : x
2. Step 2: Convert to fraction form
   139,100.78/208,667.51 = 44,297.78/x
3. Step 3: Cross multiply
   139,100.78x = 208,667.51 × 44,297.78
4. Step 4: Simplify right side
   139,100.78x = 9,243,506,186.30
5. Step 5: Solve for x
   x = 9,243,506,186.30/139,100.78
6. Step 6: Final answer
   x = 66,451.87