Finding the Fourth Proportional to 99,923.89, 137,896.77 and 54,603.76

Step by Step Solution

1. Step 1: Write the proportion equation
   99,923.89 : 137,896.77 = 54,603.76 : x
2. Step 2: Convert to fraction form
   99,923.89/137,896.77 = 54,603.76/x
3. Step 3: Cross multiply
   99,923.89x = 137,896.77 × 54,603.76
4. Step 4: Simplify right side
   99,923.89x = 7,529,682,133.86
5. Step 5: Solve for x
   x = 7,529,682,133.86/99,923.89
6. Step 6: Final answer
   x = 75,354.17