Finding the Fourth Proportional to 31,429.98, 47,051.34 and 20,304.18

Step by Step Solution

1. Step 1: Write the proportion equation
   31,429.98 : 47,051.34 = 20,304.18 : x
2. Step 2: Convert to fraction form
   31,429.98/47,051.34 = 20,304.18/x
3. Step 3: Cross multiply
   31,429.98x = 47,051.34 × 20,304.18
4. Step 4: Simplify right side
   31,429.98x = 955,338,876.60
5. Step 5: Solve for x
   x = 955,338,876.60/31,429.98
6. Step 6: Final answer
   x = 30,395.78