Finding the Fourth Proportional to 123,900.54, 185,918.94 and 64,788.36

Step by Step Solution

1. Step 1: Write the proportion equation
   123,900.54 : 185,918.94 = 64,788.36 : x
2. Step 2: Convert to fraction form
   123,900.54/185,918.94 = 64,788.36/x
3. Step 3: Cross multiply
   123,900.54x = 185,918.94 × 64,788.36
4. Step 4: Simplify right side
   123,900.54x = 12,045,383,215.54
5. Step 5: Solve for x
   x = 12,045,383,215.54/123,900.54
6. Step 6: Final answer
   x = 97,218.17