Finding the Fourth Proportional to 104,406.63, 144,081.24 and 56,659.98

Step by Step Solution

1. Step 1: Write the proportion equation
   104,406.63 : 144,081.24 = 56,659.98 : x
2. Step 2: Convert to fraction form
   104,406.63/144,081.24 = 56,659.98/x
3. Step 3: Cross multiply
   104,406.63x = 144,081.24 × 56,659.98
4. Step 4: Simplify right side
   104,406.63x = 8,163,640,176.78
5. Step 5: Solve for x
   x = 8,163,640,176.78/104,406.63
6. Step 6: Final answer
   x = 78,190.82