Finding the Fourth Proportional to 78,164.86, 107,862.38 and 49,867.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,164.86 : 107,862.38 = 49,867.50 : x
2. Step 2: Convert to fraction form
   78,164.86/107,862.38 = 49,867.50/x
3. Step 3: Cross multiply
   78,164.86x = 107,862.38 × 49,867.50
4. Step 4: Simplify right side
   78,164.86x = 5,378,827,234.65
5. Step 5: Solve for x
   x = 5,378,827,234.65/78,164.86
6. Step 6: Final answer
   x = 68,813.88