Finding the Fourth Proportional to 445,300.67, 666,374.31 and 276,900.32

Step by Step Solution

1. Step 1: Write the proportion equation
   445,300.67 : 666,374.31 = 276,900.32 : x
2. Step 2: Convert to fraction form
   445,300.67/666,374.31 = 276,900.32/x
3. Step 3: Cross multiply
   445,300.67x = 666,374.31 × 276,900.32
4. Step 4: Simplify right side
   445,300.67x = 184,519,261,344.72
5. Step 5: Solve for x
   x = 184,519,261,344.72/445,300.67
6. Step 6: Final answer
   x = 414,370.05