Finding the Fourth Proportional to 123,290.88, 185,038.08 and 64,144

Step by Step Solution

1. Step 1: Write the proportion equation
   123,290.88 : 185,038.08 = 64,144 : x
2. Step 2: Convert to fraction form
   123,290.88/185,038.08 = 64,144/x
3. Step 3: Cross multiply
   123,290.88x = 185,038.08 × 64,144
4. Step 4: Simplify right side
   123,290.88x = 11,869,082,603.52
5. Step 5: Solve for x
   x = 11,869,082,603.52/123,290.88
6. Step 6: Final answer
   x = 96,268.94