Finding the Fourth Proportional to 104,300.28, 143,933.76 and 56,553.48

Step by Step Solution

1. Step 1: Write the proportion equation
   104,300.28 : 143,933.76 = 56,553.48 : x
2. Step 2: Convert to fraction form
   104,300.28/143,933.76 = 56,553.48/x
3. Step 3: Cross multiply
   104,300.28x = 143,933.76 × 56,553.48
4. Step 4: Simplify right side
   104,300.28x = 8,139,955,017.48
5. Step 5: Solve for x
   x = 8,139,955,017.48/104,300.28
6. Step 6: Final answer
   x = 78,043.46