Finding the Fourth Proportional to 143,071.83, 214,818.42 and 80,015.50

Step by Step Solution

1. Step 1: Write the proportion equation
   143,071.83 : 214,818.42 = 80,015.50 : x
2. Step 2: Convert to fraction form
   143,071.83/214,818.42 = 80,015.50/x
3. Step 3: Cross multiply
   143,071.83x = 214,818.42 × 80,015.50
4. Step 4: Simplify right side
   143,071.83x = 17,188,802,083.13
5. Step 5: Solve for x
   x = 17,188,802,083.13/143,071.83
6. Step 6: Final answer
   x = 120,141.06