Finding the Fourth Proportional to 152,212.10, 213,563.50 and 152,212.10

Step by Step Solution

1. Step 1: Write the proportion equation
   152,212.10 : 213,563.50 = 152,212.10 : x
2. Step 2: Convert to fraction form
   152,212.10/213,563.50 = 152,212.10/x
3. Step 3: Cross multiply
   152,212.10x = 213,563.50 × 152,212.10
4. Step 4: Simplify right side
   152,212.10x = 32,506,948,818.35
5. Step 5: Solve for x
   x = 32,506,948,818.35/152,212.10
6. Step 6: Final answer
   x = 213,563.50