Finding the Fourth Proportional to 71,298.82, 107,053.37 and 39,770.48

Step by Step Solution

1. Step 1: Write the proportion equation
   71,298.82 : 107,053.37 = 39,770.48 : x
2. Step 2: Convert to fraction form
   71,298.82/107,053.37 = 39,770.48/x
3. Step 3: Cross multiply
   71,298.82x = 107,053.37 × 39,770.48
4. Step 4: Simplify right side
   71,298.82x = 4,257,563,979.30
5. Step 5: Solve for x
   x = 4,257,563,979.30/71,298.82
6. Step 6: Final answer
   x = 59,714.37