Finding the Fourth Proportional to 78,404.36, 108,242.87 and 51,624.68

Step by Step Solution

1. Step 1: Write the proportion equation
   78,404.36 : 108,242.87 = 51,624.68 : x
2. Step 2: Convert to fraction form
   78,404.36/108,242.87 = 51,624.68/x
3. Step 3: Cross multiply
   78,404.36x = 108,242.87 × 51,624.68
4. Step 4: Simplify right side
   78,404.36x = 5,588,002,726.69
5. Step 5: Solve for x
   x = 5,588,002,726.69/78,404.36
6. Step 6: Final answer
   x = 71,271.59