Finding the Fourth Proportional to 104,061.43, 143,605.22 and 56,314.78

Step by Step Solution

1. Step 1: Write the proportion equation
   104,061.43 : 143,605.22 = 56,314.78 : x
2. Step 2: Convert to fraction form
   104,061.43/143,605.22 = 56,314.78/x
3. Step 3: Cross multiply
   104,061.43x = 143,605.22 × 56,314.78
4. Step 4: Simplify right side
   104,061.43x = 8,087,096,371.15
5. Step 5: Solve for x
   x = 8,087,096,371.15/104,061.43
6. Step 6: Final answer
   x = 77,714.64