Finding the Fourth Proportional to 140,748.60, 210,734.10 and 109,644.60

Step by Step Solution

1. Step 1: Write the proportion equation
   140,748.60 : 210,734.10 = 109,644.60 : x
2. Step 2: Convert to fraction form
   140,748.60/210,734.10 = 109,644.60/x
3. Step 3: Cross multiply
   140,748.60x = 210,734.10 × 109,644.60
4. Step 4: Simplify right side
   140,748.60x = 23,105,856,100.86
5. Step 5: Solve for x
   x = 23,105,856,100.86/140,748.60
6. Step 6: Final answer
   x = 164,164.02