Finding the Fourth Proportional to 72,109.08, 108,219.42 and 47,142.36

Step by Step Solution

1. Step 1: Write the proportion equation
   72,109.08 : 108,219.42 = 47,142.36 : x
2. Step 2: Convert to fraction form
   72,109.08/108,219.42 = 47,142.36/x
3. Step 3: Cross multiply
   72,109.08x = 108,219.42 × 47,142.36
4. Step 4: Simplify right side
   72,109.08x = 5,101,718,856.63
5. Step 5: Solve for x
   x = 5,101,718,856.63/72,109.08
6. Step 6: Final answer
   x = 70,750.02