Finding the Fourth Proportional to 104,585.98, 144,328.59 and 56,839.34

Step by Step Solution

1. Step 1: Write the proportion equation
   104,585.98 : 144,328.59 = 56,839.34 : x
2. Step 2: Convert to fraction form
   104,585.98/144,328.59 = 56,839.34/x
3. Step 3: Cross multiply
   104,585.98x = 144,328.59 × 56,839.34
4. Step 4: Simplify right side
   104,585.98x = 8,203,541,798.73
5. Step 5: Solve for x
   x = 8,203,541,798.73/104,585.98
6. Step 6: Final answer
   x = 78,438.26