Finding the Fourth Proportional to 42,490.79, 58,637.66 and 23,109.87

Step by Step Solution

1. Step 1: Write the proportion equation
   42,490.79 : 58,637.66 = 23,109.87 : x
2. Step 2: Convert to fraction form
   42,490.79/58,637.66 = 23,109.87/x
3. Step 3: Cross multiply
   42,490.79x = 58,637.66 × 23,109.87
4. Step 4: Simplify right side
   42,490.79x = 1,355,108,757.48
5. Step 5: Solve for x
   x = 1,355,108,757.48/42,490.79
6. Step 6: Final answer
   x = 31,891.83