Finding the Fourth Proportional to 89,173.60, 123,085.92 and 51,472.96

Step by Step Solution

1. Step 1: Write the proportion equation
   89,173.60 : 123,085.92 = 51,472.96 : x
2. Step 2: Convert to fraction form
   89,173.60/123,085.92 = 51,472.96/x
3. Step 3: Cross multiply
   89,173.60x = 123,085.92 × 51,472.96
4. Step 4: Simplify right side
   89,173.60x = 6,335,596,636.72
5. Step 5: Solve for x
   x = 6,335,596,636.72/89,173.60
6. Step 6: Final answer
   x = 71,047.90