Finding the Fourth Proportional to 71,675.58, 98,914.83 and 39,412.64

Step by Step Solution

1. Step 1: Write the proportion equation
   71,675.58 : 98,914.83 = 39,412.64 : x
2. Step 2: Convert to fraction form
   71,675.58/98,914.83 = 39,412.64/x
3. Step 3: Cross multiply
   71,675.58x = 98,914.83 × 39,412.64
4. Step 4: Simplify right side
   71,675.58x = 3,898,494,999.37
5. Step 5: Solve for x
   x = 3,898,494,999.37/71,675.58
6. Step 6: Final answer
   x = 54,390.84