Finding the Fourth Proportional to 42,009.73, 57,972.89 and 22,890.30

Step by Step Solution

1. Step 1: Write the proportion equation
   42,009.73 : 57,972.89 = 22,890.30 : x
2. Step 2: Convert to fraction form
   42,009.73/57,972.89 = 22,890.30/x
3. Step 3: Cross multiply
   42,009.73x = 57,972.89 × 22,890.30
4. Step 4: Simplify right side
   42,009.73x = 1,327,016,619.42
5. Step 5: Solve for x
   x = 1,327,016,619.42/42,009.73
6. Step 6: Final answer
   x = 31,588.32