Finding the Fourth Proportional to 73,515, 101,451.48 and 39,981.72

Step by Step Solution

1. Step 1: Write the proportion equation
   73,515 : 101,451.48 = 39,981.72 : x
2. Step 2: Convert to fraction form
   73,515/101,451.48 = 39,981.72/x
3. Step 3: Cross multiply
   73,515x = 101,451.48 × 39,981.72
4. Step 4: Simplify right side
   73,515x = 4,056,204,666.95
5. Step 5: Solve for x
   x = 4,056,204,666.95/73,515
6. Step 6: Final answer
   x = 55,175.20