Finding the Fourth Proportional to 71,410.49, 107,116.12 and 21,490.25

Step by Step Solution

1. Step 1: Write the proportion equation
   71,410.49 : 107,116.12 = 21,490.25 : x
2. Step 2: Convert to fraction form
   71,410.49/107,116.12 = 21,490.25/x
3. Step 3: Cross multiply
   71,410.49x = 107,116.12 × 21,490.25
4. Step 4: Simplify right side
   71,410.49x = 2,301,951,554.80
5. Step 5: Solve for x
   x = 2,301,951,554.80/71,410.49
6. Step 6: Final answer
   x = 32,235.48