Finding the Fourth Proportional to 89,407.44, 123,336 and 60,728.58

Step by Step Solution

1. Step 1: Write the proportion equation
   89,407.44 : 123,336 = 60,728.58 : x
2. Step 2: Convert to fraction form
   89,407.44/123,336 = 60,728.58/x
3. Step 3: Cross multiply
   89,407.44x = 123,336 × 60,728.58
4. Step 4: Simplify right side
   89,407.44x = 7,490,020,142.88
5. Step 5: Solve for x
   x = 7,490,020,142.88/89,407.44
6. Step 6: Final answer
   x = 83,774.01