Finding the Fourth Proportional to 315,066.51, 434,870.37 and 187,717.50

Step by Step Solution

1. Step 1: Write the proportion equation
   315,066.51 : 434,870.37 = 187,717.50 : x
2. Step 2: Convert to fraction form
   315,066.51/434,870.37 = 187,717.50/x
3. Step 3: Cross multiply
   315,066.51x = 434,870.37 × 187,717.50
4. Step 4: Simplify right side
   315,066.51x = 81,632,778,680.48
5. Step 5: Solve for x
   x = 81,632,778,680.48/315,066.51
6. Step 6: Final answer
   x = 259,096.97