Finding the Fourth Proportional to 340,314.69, 510,527.39 and 115,695.21

Step by Step Solution

1. Step 1: Write the proportion equation
   340,314.69 : 510,527.39 = 115,695.21 : x
2. Step 2: Convert to fraction form
   340,314.69/510,527.39 = 115,695.21/x
3. Step 3: Cross multiply
   340,314.69x = 510,527.39 × 115,695.21
4. Step 4: Simplify right side
   340,314.69x = 59,065,573,018.33
5. Step 5: Solve for x
   x = 59,065,573,018.33/340,314.69
6. Step 6: Final answer
   x = 173,561.63