Finding the Fourth Proportional to 92,889, 128,191.68 and 54,650.52

Step by Step Solution

1. Step 1: Write the proportion equation
   92,889 : 128,191.68 = 54,650.52 : x
2. Step 2: Convert to fraction form
   92,889/128,191.68 = 54,650.52/x
3. Step 3: Cross multiply
   92,889x = 128,191.68 × 54,650.52
4. Step 4: Simplify right side
   92,889x = 7,005,741,971.67
5. Step 5: Solve for x
   x = 7,005,741,971.67/92,889
6. Step 6: Final answer
   x = 75,420.58