Finding the Fourth Proportional to 79,022.50, 118,390.21 and 45,672.13

Step by Step Solution

1. Step 1: Write the proportion equation
   79,022.50 : 118,390.21 = 45,672.13 : x
2. Step 2: Convert to fraction form
   79,022.50/118,390.21 = 45,672.13/x
3. Step 3: Cross multiply
   79,022.50x = 118,390.21 × 45,672.13
4. Step 4: Simplify right side
   79,022.50x = 5,407,133,061.85
5. Step 5: Solve for x
   x = 5,407,133,061.85/79,022.50
6. Step 6: Final answer
   x = 68,425.23