Finding the Fourth Proportional to 73,215.72, 101,037.78 and 39,681.72

Step by Step Solution

1. Step 1: Write the proportion equation
   73,215.72 : 101,037.78 = 39,681.72 : x
2. Step 2: Convert to fraction form
   73,215.72/101,037.78 = 39,681.72/x
3. Step 3: Cross multiply
   73,215.72x = 101,037.78 × 39,681.72
4. Step 4: Simplify right side
   73,215.72x = 4,009,352,895.38
5. Step 5: Solve for x
   x = 4,009,352,895.38/73,215.72
6. Step 6: Final answer
   x = 54,760.82