Finding the Fourth Proportional to 31,114, 42,922.52 and 21,045.96

Step by Step Solution

1. Step 1: Write the proportion equation
   31,114 : 42,922.52 = 21,045.96 : x
2. Step 2: Convert to fraction form
   31,114/42,922.52 = 21,045.96/x
3. Step 3: Cross multiply
   31,114x = 42,922.52 × 21,045.96
4. Step 4: Simplify right side
   31,114x = 903,345,639.02
5. Step 5: Solve for x
   x = 903,345,639.02/31,114
6. Step 6: Final answer
   x = 29,033.41