Finding the Fourth Proportional to 42,111.21, 58,112.61 and 22,991.37

Step by Step Solution

1. Step 1: Write the proportion equation
   42,111.21 : 58,112.61 = 22,991.37 : x
2. Step 2: Convert to fraction form
   42,111.21/58,112.61 = 22,991.37/x
3. Step 3: Cross multiply
   42,111.21x = 58,112.61 × 22,991.37
4. Step 4: Simplify right side
   42,111.21x = 1,336,088,214.04
5. Step 5: Solve for x
   x = 1,336,088,214.04/42,111.21
6. Step 6: Final answer
   x = 31,727.61