Finding the Fourth Proportional to 259,162.20, 388,796.15 and 146,892.56

Step by Step Solution

1. Step 1: Write the proportion equation
   259,162.20 : 388,796.15 = 146,892.56 : x
2. Step 2: Convert to fraction form
   259,162.20/388,796.15 = 146,892.56/x
3. Step 3: Cross multiply
   259,162.20x = 388,796.15 × 146,892.56
4. Step 4: Simplify right side
   259,162.20x = 57,111,260,214.89
5. Step 5: Solve for x
   x = 57,111,260,214.89/259,162.20
6. Step 6: Final answer
   x = 220,368.79