Finding the Fourth Proportional to 89,672.85, 123,743.79 and 51,430.43

Step by Step Solution

1. Step 1: Write the proportion equation
   89,672.85 : 123,743.79 = 51,430.43 : x
2. Step 2: Convert to fraction form
   89,672.85/123,743.79 = 51,430.43/x
3. Step 3: Cross multiply
   89,672.85x = 123,743.79 × 51,430.43
4. Step 4: Simplify right side
   89,672.85x = 6,364,196,638.89
5. Step 5: Solve for x
   x = 6,364,196,638.89/89,672.85
6. Step 6: Final answer
   x = 70,971.28