Finding the Fourth Proportional to 147,223.98, 220,856.64 and 72,347.08

Step by Step Solution

1. Step 1: Write the proportion equation
   147,223.98 : 220,856.64 = 72,347.08 : x
2. Step 2: Convert to fraction form
   147,223.98/220,856.64 = 72,347.08/x
3. Step 3: Cross multiply
   147,223.98x = 220,856.64 × 72,347.08
4. Step 4: Simplify right side
   147,223.98x = 15,978,333,002.61
5. Step 5: Solve for x
   x = 15,978,333,002.61/147,223.98
6. Step 6: Final answer
   x = 108,530.78