Finding the Fourth Proportional to 79,870.94, 110,193.98 and 51,206.39

Step by Step Solution

1. Step 1: Write the proportion equation
   79,870.94 : 110,193.98 = 51,206.39 : x
2. Step 2: Convert to fraction form
   79,870.94/110,193.98 = 51,206.39/x
3. Step 3: Cross multiply
   79,870.94x = 110,193.98 × 51,206.39
4. Step 4: Simplify right side
   79,870.94x = 5,642,635,108.53
5. Step 5: Solve for x
   x = 5,642,635,108.53/79,870.94
6. Step 6: Final answer
   x = 70,646.91