Finding the Fourth Proportional to 99,128.82, 148,644.39 and 35,939.46

Step by Step Solution

1. Step 1: Write the proportion equation
   99,128.82 : 148,644.39 = 35,939.46 : x
2. Step 2: Convert to fraction form
   99,128.82/148,644.39 = 35,939.46/x
3. Step 3: Cross multiply
   99,128.82x = 148,644.39 × 35,939.46
4. Step 4: Simplify right side
   99,128.82x = 5,342,198,445.55
5. Step 5: Solve for x
   x = 5,342,198,445.55/99,128.82
6. Step 6: Final answer
   x = 53,891.48