Finding the Fourth Proportional to 83,019.40, 124,455.12 and 30,416.56

Step by Step Solution

1. Step 1: Write the proportion equation
   83,019.40 : 124,455.12 = 30,416.56 : x
2. Step 2: Convert to fraction form
   83,019.40/124,455.12 = 30,416.56/x
3. Step 3: Cross multiply
   83,019.40x = 124,455.12 × 30,416.56
4. Step 4: Simplify right side
   83,019.40x = 3,785,496,624.79
5. Step 5: Solve for x
   x = 3,785,496,624.79/83,019.40
6. Step 6: Final answer
   x = 45,597.74