Finding the Fourth Proportional to 78,056, 107,763.72 and 51,245.42

Step by Step Solution

1. Step 1: Write the proportion equation
   78,056 : 107,763.72 = 51,245.42 : x
2. Step 2: Convert to fraction form
   78,056/107,763.72 = 51,245.42/x
3. Step 3: Cross multiply
   78,056x = 107,763.72 × 51,245.42
4. Step 4: Simplify right side
   78,056x = 5,522,397,092.16
5. Step 5: Solve for x
   x = 5,522,397,092.16/78,056
6. Step 6: Final answer
   x = 70,749.17