Finding the Fourth Proportional to 520,647.33, 780,892.09 and 179,142.69

Step by Step Solution

1. Step 1: Write the proportion equation
   520,647.33 : 780,892.09 = 179,142.69 : x
2. Step 2: Convert to fraction form
   520,647.33/780,892.09 = 179,142.69/x
3. Step 3: Cross multiply
   520,647.33x = 780,892.09 × 179,142.69
4. Step 4: Simplify right side
   520,647.33x = 139,891,109,602.32
5. Step 5: Solve for x
   x = 139,891,109,602.32/520,647.33
6. Step 6: Final answer
   x = 268,686.89