Finding the Fourth Proportional to 340,429.50, 510,598.28 and 140,722.18

Step by Step Solution

1. Step 1: Write the proportion equation
   340,429.50 : 510,598.28 = 140,722.18 : x
2. Step 2: Convert to fraction form
   340,429.50/510,598.28 = 140,722.18/x
3. Step 3: Cross multiply
   340,429.50x = 510,598.28 × 140,722.18
4. Step 4: Simplify right side
   340,429.50x = 71,852,502,141.16
5. Step 5: Solve for x
   x = 71,852,502,141.16/340,429.50
6. Step 6: Final answer
   x = 211,064.26