Finding the Fourth Proportional to 104,061.53, 143,605.28 and 56,314.87

Step by Step Solution

1. Step 1: Write the proportion equation
   104,061.53 : 143,605.28 = 56,314.87 : x
2. Step 2: Convert to fraction form
   104,061.53/143,605.28 = 56,314.87/x
3. Step 3: Cross multiply
   104,061.53x = 143,605.28 × 56,314.87
4. Step 4: Simplify right side
   104,061.53x = 8,087,112,456.29
5. Step 5: Solve for x
   x = 8,087,112,456.29/104,061.53
6. Step 6: Final answer
   x = 77,714.72