Finding the Fourth Proportional to 147,379.47, 221,047.67 and 72,479.52

Step by Step Solution

1. Step 1: Write the proportion equation
   147,379.47 : 221,047.67 = 72,479.52 : x
2. Step 2: Convert to fraction form
   147,379.47/221,047.67 = 72,479.52/x
3. Step 3: Cross multiply
   147,379.47x = 221,047.67 × 72,479.52
4. Step 4: Simplify right side
   147,379.47x = 16,021,429,018.72
5. Step 5: Solve for x
   x = 16,021,429,018.72/147,379.47
6. Step 6: Final answer
   x = 108,708.69