Finding the Fourth Proportional to 89,436.54, 123,407.91 and 51,703.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,436.54 : 123,407.91 = 51,703.50 : x
2. Step 2: Convert to fraction form
   89,436.54/123,407.91 = 51,703.50/x
3. Step 3: Cross multiply
   89,436.54x = 123,407.91 × 51,703.50
4. Step 4: Simplify right side
   89,436.54x = 6,380,620,874.69
5. Step 5: Solve for x
   x = 6,380,620,874.69/89,436.54
6. Step 6: Final answer
   x = 71,342.44