Finding the Fourth Proportional to 342,419.50, 472,540.53 and 191,516.50

Step by Step Solution

1. Step 1: Write the proportion equation
   342,419.50 : 472,540.53 = 191,516.50 : x
2. Step 2: Convert to fraction form
   342,419.50/472,540.53 = 191,516.50/x
3. Step 3: Cross multiply
   342,419.50x = 472,540.53 × 191,516.50
4. Step 4: Simplify right side
   342,419.50x = 90,499,308,413.75
5. Step 5: Solve for x
   x = 90,499,308,413.75/342,419.50
6. Step 6: Final answer
   x = 264,293.68