Finding the Fourth Proportional to 219,222.52, 328,845.12 and 69,478.72

Step by Step Solution

1. Step 1: Write the proportion equation
   219,222.52 : 328,845.12 = 69,478.72 : x
2. Step 2: Convert to fraction form
   219,222.52/328,845.12 = 69,478.72/x
3. Step 3: Cross multiply
   219,222.52x = 328,845.12 × 69,478.72
4. Step 4: Simplify right side
   219,222.52x = 22,847,738,015.85
5. Step 5: Solve for x
   x = 22,847,738,015.85/219,222.52
6. Step 6: Final answer
   x = 104,221.67