Finding the Fourth Proportional to 71,410.74, 107,116.49 and 21,490.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,410.74 : 107,116.49 = 21,490.50 : x
2. Step 2: Convert to fraction form
   71,410.74/107,116.49 = 21,490.50/x
3. Step 3: Cross multiply
   71,410.74x = 107,116.49 × 21,490.50
4. Step 4: Simplify right side
   71,410.74x = 2,301,986,392.76
5. Step 5: Solve for x
   x = 2,301,986,392.76/71,410.74
6. Step 6: Final answer
   x = 32,235.86