Finding the Fourth Proportional to 79,152.08, 118,290.34 and 70,928.72

Step by Step Solution

1. Step 1: Write the proportion equation
   79,152.08 : 118,290.34 = 70,928.72 : x
2. Step 2: Convert to fraction form
   79,152.08/118,290.34 = 70,928.72/x
3. Step 3: Cross multiply
   79,152.08x = 118,290.34 × 70,928.72
4. Step 4: Simplify right side
   79,152.08x = 8,390,182,404.56
5. Step 5: Solve for x
   x = 8,390,182,404.56/79,152.08
6. Step 6: Final answer
   x = 106,000.78