Finding the Fourth Proportional to 139,714.54, 209,454.26 and 60,769.31

Step by Step Solution

1. Step 1: Write the proportion equation
   139,714.54 : 209,454.26 = 60,769.31 : x
2. Step 2: Convert to fraction form
   139,714.54/209,454.26 = 60,769.31/x
3. Step 3: Cross multiply
   139,714.54x = 209,454.26 × 60,769.31
4. Step 4: Simplify right side
   139,714.54x = 12,728,389,505.64
5. Step 5: Solve for x
   x = 12,728,389,505.64/139,714.54
6. Step 6: Final answer
   x = 91,102.83