Finding the Fourth Proportional to 152,762.05, 210,906.72 and 143,230.15

Step by Step Solution

1. Step 1: Write the proportion equation
   152,762.05 : 210,906.72 = 143,230.15 : x
2. Step 2: Convert to fraction form
   152,762.05/210,906.72 = 143,230.15/x
3. Step 3: Cross multiply
   152,762.05x = 210,906.72 × 143,230.15
4. Step 4: Simplify right side
   152,762.05x = 30,208,201,416.32
5. Step 5: Solve for x
   x = 30,208,201,416.32/152,762.05
6. Step 6: Final answer
   x = 197,746.76