Finding the Fourth Proportional to 147,359.12, 221,081.82 and 47,517.31

Step by Step Solution

1. Step 1: Write the proportion equation
   147,359.12 : 221,081.82 = 47,517.31 : x
2. Step 2: Convert to fraction form
   147,359.12/221,081.82 = 47,517.31/x
3. Step 3: Cross multiply
   147,359.12x = 221,081.82 × 47,517.31
4. Step 4: Simplify right side
   147,359.12x = 10,505,212,823.60
5. Step 5: Solve for x
   x = 10,505,212,823.60/147,359.12
6. Step 6: Final answer
   x = 71,289.87