Finding the Fourth Proportional to 139,826.64, 209,743.60 and 34,644.08

Step by Step Solution

1. Step 1: Write the proportion equation
   139,826.64 : 209,743.60 = 34,644.08 : x
2. Step 2: Convert to fraction form
   139,826.64/209,743.60 = 34,644.08/x
3. Step 3: Cross multiply
   139,826.64x = 209,743.60 × 34,644.08
4. Step 4: Simplify right side
   139,826.64x = 7,266,374,057.89
5. Step 5: Solve for x
   x = 7,266,374,057.89/139,826.64
6. Step 6: Final answer
   x = 51,967.02