Finding the Fourth Proportional to 78,945.42, 109,017.42 and 50,700.30

Step by Step Solution

1. Step 1: Write the proportion equation
   78,945.42 : 109,017.42 = 50,700.30 : x
2. Step 2: Convert to fraction form
   78,945.42/109,017.42 = 50,700.30/x
3. Step 3: Cross multiply
   78,945.42x = 109,017.42 × 50,700.30
4. Step 4: Simplify right side
   78,945.42x = 5,527,215,899.23
5. Step 5: Solve for x
   x = 5,527,215,899.23/78,945.42
6. Step 6: Final answer
   x = 70,013.13