Finding the Fourth Proportional to 89,430.72, 123,414.72 and 51,704.64

Step by Step Solution

1. Step 1: Write the proportion equation
   89,430.72 : 123,414.72 = 51,704.64 : x
2. Step 2: Convert to fraction form
   89,430.72/123,414.72 = 51,704.64/x
3. Step 3: Cross multiply
   89,430.72x = 123,414.72 × 51,704.64
4. Step 4: Simplify right side
   89,430.72x = 6,381,113,668.30
5. Step 5: Solve for x
   x = 6,381,113,668.30/89,430.72
6. Step 6: Final answer
   x = 71,352.59