Finding the Fourth Proportional to 139,114.41, 208,647.38 and 64,228.16

Step by Step Solution

1. Step 1: Write the proportion equation
   139,114.41 : 208,647.38 = 64,228.16 : x
2. Step 2: Convert to fraction form
   139,114.41/208,647.38 = 64,228.16/x
3. Step 3: Cross multiply
   139,114.41x = 208,647.38 × 64,228.16
4. Step 4: Simplify right side
   139,114.41x = 13,401,035,941.84
5. Step 5: Solve for x
   x = 13,401,035,941.84/139,114.41
6. Step 6: Final answer
   x = 96,331.04