Finding the Fourth Proportional to 92,890, 128,193.06 and 54,651.52

Step by Step Solution

1. Step 1: Write the proportion equation
   92,890 : 128,193.06 = 54,651.52 : x
2. Step 2: Convert to fraction form
   92,890/128,193.06 = 54,651.52/x
3. Step 3: Cross multiply
   92,890x = 128,193.06 × 54,651.52
4. Step 4: Simplify right side
   92,890x = 7,005,945,582.45
5. Step 5: Solve for x
   x = 7,005,945,582.45/92,890
6. Step 6: Final answer
   x = 75,421.96