Finding the Fourth Proportional to 340,303.69, 510,455.71 and 140,404.37

Step by Step Solution

1. Step 1: Write the proportion equation
   340,303.69 : 510,455.71 = 140,404.37 : x
2. Step 2: Convert to fraction form
   340,303.69/510,455.71 = 140,404.37/x
3. Step 3: Cross multiply
   340,303.69x = 510,455.71 × 140,404.37
4. Step 4: Simplify right side
   340,303.69x = 71,670,214,826.03
5. Step 5: Solve for x
   x = 71,670,214,826.03/340,303.69
6. Step 6: Final answer
   x = 210,606.63