Finding the Fourth Proportional to 340,410.55, 510,561.15 and 103,698.18

Step by Step Solution

1. Step 1: Write the proportion equation
   340,410.55 : 510,561.15 = 103,698.18 : x
2. Step 2: Convert to fraction form
   340,410.55/510,561.15 = 103,698.18/x
3. Step 3: Cross multiply
   340,410.55x = 510,561.15 × 103,698.18
4. Step 4: Simplify right side
   340,410.55x = 52,944,262,033.71
5. Step 5: Solve for x
   x = 52,944,262,033.71/340,410.55
6. Step 6: Final answer
   x = 155,530.61