Finding the Fourth Proportional to 510,145.56, 764,890.29 and 243,900.18

Step by Step Solution

1. Step 1: Write the proportion equation
   510,145.56 : 764,890.29 = 243,900.18 : x
2. Step 2: Convert to fraction form
   510,145.56/764,890.29 = 243,900.18/x
3. Step 3: Cross multiply
   510,145.56x = 764,890.29 × 243,900.18
4. Step 4: Simplify right side
   510,145.56x = 186,556,879,411.25
5. Step 5: Solve for x
   x = 186,556,879,411.25/510,145.56
6. Step 6: Final answer
   x = 365,693.43