Finding the Fourth Proportional to 104,518.86, 144,238.71 and 56,774.94

Step by Step Solution

1. Step 1: Write the proportion equation
   104,518.86 : 144,238.71 = 56,774.94 : x
2. Step 2: Convert to fraction form
   104,518.86/144,238.71 = 56,774.94/x
3. Step 3: Cross multiply
   104,518.86x = 144,238.71 × 56,774.94
4. Step 4: Simplify right side
   104,518.86x = 8,189,144,105.93
5. Step 5: Solve for x
   x = 8,189,144,105.93/104,518.86
6. Step 6: Final answer
   x = 78,350.87