Finding the Fourth Proportional to 104,061.81, 143,606.31 and 56,316.15

Step by Step Solution

1. Step 1: Write the proportion equation
   104,061.81 : 143,606.31 = 56,316.15 : x
2. Step 2: Convert to fraction form
   104,061.81/143,606.31 = 56,316.15/x
3. Step 3: Cross multiply
   104,061.81x = 143,606.31 × 56,316.15
4. Step 4: Simplify right side
   104,061.81x = 8,087,354,494.91
5. Step 5: Solve for x
   x = 8,087,354,494.91/104,061.81
6. Step 6: Final answer
   x = 77,716.83