Finding the Fourth Proportional to 139,029.35, 208,606.05 and 64,109.27

Step by Step Solution

1. Step 1: Write the proportion equation
   139,029.35 : 208,606.05 = 64,109.27 : x
2. Step 2: Convert to fraction form
   139,029.35/208,606.05 = 64,109.27/x
3. Step 3: Cross multiply
   139,029.35x = 208,606.05 × 64,109.27
4. Step 4: Simplify right side
   139,029.35x = 13,373,582,104.60
5. Step 5: Solve for x
   x = 13,373,582,104.60/139,029.35
6. Step 6: Final answer
   x = 96,192.51