Finding the Fourth Proportional to 60,789.40, 91,174.98 and 19,231

Step by Step Solution

1. Step 1: Write the proportion equation
   60,789.40 : 91,174.98 = 19,231 : x
2. Step 2: Convert to fraction form
   60,789.40/91,174.98 = 19,231/x
3. Step 3: Cross multiply
   60,789.40x = 91,174.98 × 19,231
4. Step 4: Simplify right side
   60,789.40x = 1,753,386,040.38
5. Step 5: Solve for x
   x = 1,753,386,040.38/60,789.40
6. Step 6: Final answer
   x = 28,843.61