Finding the Fourth Proportional to 92,902.50, 128,183.46 and 54,663.72

Step by Step Solution

1. Step 1: Write the proportion equation
   92,902.50 : 128,183.46 = 54,663.72 : x
2. Step 2: Convert to fraction form
   92,902.50/128,183.46 = 54,663.72/x
3. Step 3: Cross multiply
   92,902.50x = 128,183.46 × 54,663.72
4. Step 4: Simplify right side
   92,902.50x = 7,006,984,766.07
5. Step 5: Solve for x
   x = 7,006,984,766.07/92,902.50
6. Step 6: Final answer
   x = 75,422.99