Finding the Fourth Proportional to 71,486.56, 98,650.72 and 39,654.64

Step by Step Solution

1. Step 1: Write the proportion equation
   71,486.56 : 98,650.72 = 39,654.64 : x
2. Step 2: Convert to fraction form
   71,486.56/98,650.72 = 39,654.64/x
3. Step 3: Cross multiply
   71,486.56x = 98,650.72 × 39,654.64
4. Step 4: Simplify right side
   71,486.56x = 3,911,958,787.34
5. Step 5: Solve for x
   x = 3,911,958,787.34/71,486.56
6. Step 6: Final answer
   x = 54,723.00