Finding the Fourth Proportional to 104,420.63, 144,100.61 and 56,673.98

Step by Step Solution

1. Step 1: Write the proportion equation
   104,420.63 : 144,100.61 = 56,673.98 : x
2. Step 2: Convert to fraction form
   104,420.63/144,100.61 = 56,673.98/x
3. Step 3: Cross multiply
   104,420.63x = 144,100.61 × 56,673.98
4. Step 4: Simplify right side
   104,420.63x = 8,166,755,166.01
5. Step 5: Solve for x
   x = 8,166,755,166.01/104,420.63
6. Step 6: Final answer
   x = 78,210.17