Finding the Fourth Proportional to 31,471.04, 43,436.76 and 21,416.24

Step by Step Solution

1. Step 1: Write the proportion equation
   31,471.04 : 43,436.76 = 21,416.24 : x
2. Step 2: Convert to fraction form
   31,471.04/43,436.76 = 21,416.24/x
3. Step 3: Cross multiply
   31,471.04x = 43,436.76 × 21,416.24
4. Step 4: Simplify right side
   31,471.04x = 930,252,076.98
5. Step 5: Solve for x
   x = 930,252,076.98/31,471.04
6. Step 6: Final answer
   x = 29,558.99