Finding the Fourth Proportional to 143,139.47, 214,659.92 and 72,034.63

Step by Step Solution

1. Step 1: Write the proportion equation
   143,139.47 : 214,659.92 = 72,034.63 : x
2. Step 2: Convert to fraction form
   143,139.47/214,659.92 = 72,034.63/x
3. Step 3: Cross multiply
   143,139.47x = 214,659.92 × 72,034.63
4. Step 4: Simplify right side
   143,139.47x = 15,462,947,913.03
5. Step 5: Solve for x
   x = 15,462,947,913.03/143,139.47
6. Step 6: Final answer
   x = 108,027.14