Finding the Fourth Proportional to 139,308.36, 208,997.94 and 64,482.42

Step by Step Solution

1. Step 1: Write the proportion equation
   139,308.36 : 208,997.94 = 64,482.42 : x
2. Step 2: Convert to fraction form
   139,308.36/208,997.94 = 64,482.42/x
3. Step 3: Cross multiply
   139,308.36x = 208,997.94 × 64,482.42
4. Step 4: Simplify right side
   139,308.36x = 13,476,692,946.21
5. Step 5: Solve for x
   x = 13,476,692,946.21/139,308.36
6. Step 6: Final answer
   x = 96,740.02