Finding the Fourth Proportional to 154,472.72, 213,175.61 and 87,404.72

Step by Step Solution

1. Step 1: Write the proportion equation
   154,472.72 : 213,175.61 = 87,404.72 : x
2. Step 2: Convert to fraction form
   154,472.72/213,175.61 = 87,404.72/x
3. Step 3: Cross multiply
   154,472.72x = 213,175.61 × 87,404.72
4. Step 4: Simplify right side
   154,472.72x = 18,632,552,999.98
5. Step 5: Solve for x
   x = 18,632,552,999.98/154,472.72
6. Step 6: Final answer
   x = 120,620.35