Finding the Fourth Proportional to 104,196.36, 143,790.78 and 56,451

Step by Step Solution

1. Step 1: Write the proportion equation
   104,196.36 : 143,790.78 = 56,451 : x
2. Step 2: Convert to fraction form
   104,196.36/143,790.78 = 56,451/x
3. Step 3: Cross multiply
   104,196.36x = 143,790.78 × 56,451
4. Step 4: Simplify right side
   104,196.36x = 8,117,133,321.78
5. Step 5: Solve for x
   x = 8,117,133,321.78/104,196.36
6. Step 6: Final answer
   x = 77,902.27