Finding the Fourth Proportional to 139,101.78, 208,669.01 and 44,298.78

Step by Step Solution

1. Step 1: Write the proportion equation
   139,101.78 : 208,669.01 = 44,298.78 : x
2. Step 2: Convert to fraction form
   139,101.78/208,669.01 = 44,298.78/x
3. Step 3: Cross multiply
   139,101.78x = 208,669.01 × 44,298.78
4. Step 4: Simplify right side
   139,101.78x = 9,243,782,566.81
5. Step 5: Solve for x
   x = 9,243,782,566.81/139,101.78
6. Step 6: Final answer
   x = 66,453.37