Finding the Fourth Proportional to 67,800.46, 93,567.42 and 39,128.89

Step by Step Solution

1. Step 1: Write the proportion equation
   67,800.46 : 93,567.42 = 39,128.89 : x
2. Step 2: Convert to fraction form
   67,800.46/93,567.42 = 39,128.89/x
3. Step 3: Cross multiply
   67,800.46x = 93,567.42 × 39,128.89
4. Step 4: Simplify right side
   67,800.46x = 3,661,189,284.76
5. Step 5: Solve for x
   x = 3,661,189,284.76/67,800.46
6. Step 6: Final answer
   x = 53,999.48