Finding the Fourth Proportional to 315,096.52, 434,911.78 and 187,747.50

Step by Step Solution

1. Step 1: Write the proportion equation
   315,096.52 : 434,911.78 = 187,747.50 : x
2. Step 2: Convert to fraction form
   315,096.52/434,911.78 = 187,747.50/x
3. Step 3: Cross multiply
   315,096.52x = 434,911.78 × 187,747.50
4. Step 4: Simplify right side
   315,096.52x = 81,653,599,415.55
5. Step 5: Solve for x
   x = 81,653,599,415.55/315,096.52
6. Step 6: Final answer
   x = 259,138.37