Finding the Fourth Proportional to 140,407.49, 210,648.13 and 50,459.29

Step by Step Solution

1. Step 1: Write the proportion equation
   140,407.49 : 210,648.13 = 50,459.29 : x
2. Step 2: Convert to fraction form
   140,407.49/210,648.13 = 50,459.29/x
3. Step 3: Cross multiply
   140,407.49x = 210,648.13 × 50,459.29
4. Step 4: Simplify right side
   140,407.49x = 10,629,154,426.86
5. Step 5: Solve for x
   x = 10,629,154,426.86/140,407.49
6. Step 6: Final answer
   x = 75,702.19