Finding the Fourth Proportional to 43,215.50, 64,834.19 and 12,050.75

Step by Step Solution

1. Step 1: Write the proportion equation
   43,215.50 : 64,834.19 = 12,050.75 : x
2. Step 2: Convert to fraction form
   43,215.50/64,834.19 = 12,050.75/x
3. Step 3: Cross multiply
   43,215.50x = 64,834.19 × 12,050.75
4. Step 4: Simplify right side
   43,215.50x = 781,300,554.89
5. Step 5: Solve for x
   x = 781,300,554.89/43,215.50
6. Step 6: Final answer
   x = 18,079.17