Finding the Fourth Proportional to 89,745.37, 123,901.75 and 79,781.76

Step by Step Solution

1. Step 1: Write the proportion equation
   89,745.37 : 123,901.75 = 79,781.76 : x
2. Step 2: Convert to fraction form
   89,745.37/123,901.75 = 79,781.76/x
3. Step 3: Cross multiply
   89,745.37x = 123,901.75 × 79,781.76
4. Step 4: Simplify right side
   89,745.37x = 9,885,099,781.81
5. Step 5: Solve for x
   x = 9,885,099,781.81/89,745.37
6. Step 6: Final answer
   x = 110,146.07