Finding the Fourth Proportional to 78,150.43, 107,807.96 and 49,421.68

Step by Step Solution

1. Step 1: Write the proportion equation
   78,150.43 : 107,807.96 = 49,421.68 : x
2. Step 2: Convert to fraction form
   78,150.43/107,807.96 = 49,421.68/x
3. Step 3: Cross multiply
   78,150.43x = 107,807.96 × 49,421.68
4. Step 4: Simplify right side
   78,150.43x = 5,328,050,500.57
5. Step 5: Solve for x
   x = 5,328,050,500.57/78,150.43
6. Step 6: Final answer
   x = 68,176.85