Finding the Fourth Proportional to 128,940.94, 193,410.53 and 70,150.27

Step by Step Solution

1. Step 1: Write the proportion equation
   128,940.94 : 193,410.53 = 70,150.27 : x
2. Step 2: Convert to fraction form
   128,940.94/193,410.53 = 70,150.27/x
3. Step 3: Cross multiply
   128,940.94x = 193,410.53 × 70,150.27
4. Step 4: Simplify right side
   128,940.94x = 13,567,800,900.34
5. Step 5: Solve for x
   x = 13,567,800,900.34/128,940.94
6. Step 6: Final answer
   x = 105,224.93