Finding the Fourth Proportional to 152,216.10, 213,569.10 and 152,216.10

Step by Step Solution

1. Step 1: Write the proportion equation
   152,216.10 : 213,569.10 = 152,216.10 : x
2. Step 2: Convert to fraction form
   152,216.10/213,569.10 = 152,216.10/x
3. Step 3: Cross multiply
   152,216.10x = 213,569.10 × 152,216.10
4. Step 4: Simplify right side
   152,216.10x = 32,508,655,482.51
5. Step 5: Solve for x
   x = 32,508,655,482.51/152,216.10
6. Step 6: Final answer
   x = 213,569.10