Finding the Fourth Proportional to 93,111.78, 128,493.42 and 50,670.36

Step by Step Solution

1. Step 1: Write the proportion equation
   93,111.78 : 128,493.42 = 50,670.36 : x
2. Step 2: Convert to fraction form
   93,111.78/128,493.42 = 50,670.36/x
3. Step 3: Cross multiply
   93,111.78x = 128,493.42 × 50,670.36
4. Step 4: Simplify right side
   93,111.78x = 6,510,807,849.03
5. Step 5: Solve for x
   x = 6,510,807,849.03/93,111.78
6. Step 6: Final answer
   x = 69,924.64