Finding the Fourth Proportional to 124,426.05, 186,639.77 and 30,931.80

Step by Step Solution

1. Step 1: Write the proportion equation
   124,426.05 : 186,639.77 = 30,931.80 : x
2. Step 2: Convert to fraction form
   124,426.05/186,639.77 = 30,931.80/x
3. Step 3: Cross multiply
   124,426.05x = 186,639.77 × 30,931.80
4. Step 4: Simplify right side
   124,426.05x = 5,773,103,883.03
5. Step 5: Solve for x
   x = 5,773,103,883.03/124,426.05
6. Step 6: Final answer
   x = 46,397.87