Finding the Fourth Proportional to 152,199.10, 213,545.30 and 152,199.10

Step by Step Solution

1. Step 1: Write the proportion equation
   152,199.10 : 213,545.30 = 152,199.10 : x
2. Step 2: Convert to fraction form
   152,199.10/213,545.30 = 152,199.10/x
3. Step 3: Cross multiply
   152,199.10x = 213,545.30 × 152,199.10
4. Step 4: Simplify right side
   152,199.10x = 32,501,402,469.23
5. Step 5: Solve for x
   x = 32,501,402,469.23/152,199.10
6. Step 6: Final answer
   x = 213,545.30