Finding the Fourth Proportional to 79,166.79, 109,250.34 and 42,868.64

Step by Step Solution

1. Step 1: Write the proportion equation
   79,166.79 : 109,250.34 = 42,868.64 : x
2. Step 2: Convert to fraction form
   79,166.79/109,250.34 = 42,868.64/x
3. Step 3: Cross multiply
   79,166.79x = 109,250.34 × 42,868.64
4. Step 4: Simplify right side
   79,166.79x = 4,683,412,949.09
5. Step 5: Solve for x
   x = 4,683,412,949.09/79,166.79
6. Step 6: Final answer
   x = 59,158.81