Finding the Fourth Proportional to 91,571.23, 137,403.69 and 43,594.05

Step by Step Solution

1. Step 1: Write the proportion equation
   91,571.23 : 137,403.69 = 43,594.05 : x
2. Step 2: Convert to fraction form
   91,571.23/137,403.69 = 43,594.05/x
3. Step 3: Cross multiply
   91,571.23x = 137,403.69 × 43,594.05
4. Step 4: Simplify right side
   91,571.23x = 5,989,983,683.83
5. Step 5: Solve for x
   x = 5,989,983,683.83/91,571.23
6. Step 6: Final answer
   x = 65,413.38