Finding the Fourth Proportional to 93,111.42, 128,496.09 and 50,672.28

Step by Step Solution

1. Step 1: Write the proportion equation
   93,111.42 : 128,496.09 = 50,672.28 : x
2. Step 2: Convert to fraction form
   93,111.42/128,496.09 = 50,672.28/x
3. Step 3: Cross multiply
   93,111.42x = 128,496.09 × 50,672.28
4. Step 4: Simplify right side
   93,111.42x = 6,511,189,851.39
5. Step 5: Solve for x
   x = 6,511,189,851.39/93,111.42
6. Step 6: Final answer
   x = 69,929.01