Finding the Fourth Proportional to 42,637.74, 58,831.10 and 30,727.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,637.74 : 58,831.10 = 30,727.50 : x
2. Step 2: Convert to fraction form
   42,637.74/58,831.10 = 30,727.50/x
3. Step 3: Cross multiply
   42,637.74x = 58,831.10 × 30,727.50
4. Step 4: Simplify right side
   42,637.74x = 1,807,732,625.25
5. Step 5: Solve for x
   x = 1,807,732,625.25/42,637.74
6. Step 6: Final answer
   x = 42,397.48