Finding the Fourth Proportional to 78,379.99, 108,195.41 and 54,520.51

Step by Step Solution

1. Step 1: Write the proportion equation
   78,379.99 : 108,195.41 = 54,520.51 : x
2. Step 2: Convert to fraction form
   78,379.99/108,195.41 = 54,520.51/x
3. Step 3: Cross multiply
   78,379.99x = 108,195.41 × 54,520.51
4. Step 4: Simplify right side
   78,379.99x = 5,898,868,932.86
5. Step 5: Solve for x
   x = 5,898,868,932.86/78,379.99
6. Step 6: Final answer
   x = 75,259.88