Finding the Fourth Proportional to 79,189.20, 118,746.68 and 45,918.72

Step by Step Solution

1. Step 1: Write the proportion equation
   79,189.20 : 118,746.68 = 45,918.72 : x
2. Step 2: Convert to fraction form
   79,189.20/118,746.68 = 45,918.72/x
3. Step 3: Cross multiply
   79,189.20x = 118,746.68 × 45,918.72
4. Step 4: Simplify right side
   79,189.20x = 5,452,695,549.85
5. Step 5: Solve for x
   x = 5,452,695,549.85/79,189.20
6. Step 6: Final answer
   x = 68,856.56