Finding the Fourth Proportional to 492,345.56, 679,436.89 and 265,991.06

Step by Step Solution

1. Step 1: Write the proportion equation
   492,345.56 : 679,436.89 = 265,991.06 : x
2. Step 2: Convert to fraction form
   492,345.56/679,436.89 = 265,991.06/x
3. Step 3: Cross multiply
   492,345.56x = 679,436.89 × 265,991.06
4. Step 4: Simplify right side
   492,345.56x = 180,724,139,607.82
5. Step 5: Solve for x
   x = 180,724,139,607.82/492,345.56
6. Step 6: Final answer
   x = 367,067.67