Finding the Fourth Proportional to 152,218.10, 213,571.90 and 152,218.10

Step by Step Solution

1. Step 1: Write the proportion equation
   152,218.10 : 213,571.90 = 152,218.10 : x
2. Step 2: Convert to fraction form
   152,218.10/213,571.90 = 152,218.10/x
3. Step 3: Cross multiply
   152,218.10x = 213,571.90 × 152,218.10
4. Step 4: Simplify right side
   152,218.10x = 32,509,508,831.39
5. Step 5: Solve for x
   x = 32,509,508,831.39/152,218.10
6. Step 6: Final answer
   x = 213,571.90