Finding the Fourth Proportional to 92,847, 128,145.06 and 55,120.44

Step by Step Solution

1. Step 1: Write the proportion equation
   92,847 : 128,145.06 = 55,120.44 : x
2. Step 2: Convert to fraction form
   92,847/128,145.06 = 55,120.44/x
3. Step 3: Cross multiply
   92,847x = 128,145.06 × 55,120.44
4. Step 4: Simplify right side
   92,847x = 7,063,412,091.03
5. Step 5: Solve for x
   x = 7,063,412,091.03/92,847
6. Step 6: Final answer
   x = 76,075.82