Finding the Fourth Proportional to 476,866.10, 715,111.32 and 173,188.46

Step by Step Solution

1. Step 1: Write the proportion equation
   476,866.10 : 715,111.32 = 173,188.46 : x
2. Step 2: Convert to fraction form
   476,866.10/715,111.32 = 173,188.46/x
3. Step 3: Cross multiply
   476,866.10x = 715,111.32 × 173,188.46
4. Step 4: Simplify right side
   476,866.10x = 123,849,028,239.37
5. Step 5: Solve for x
   x = 123,849,028,239.37/476,866.10
6. Step 6: Final answer
   x = 259,714.47