Finding the Fourth Proportional to 67,980.30, 101,985.04 and 28,514.67

Step by Step Solution

1. Step 1: Write the proportion equation
   67,980.30 : 101,985.04 = 28,514.67 : x
2. Step 2: Convert to fraction form
   67,980.30/101,985.04 = 28,514.67/x
3. Step 3: Cross multiply
   67,980.30x = 101,985.04 × 28,514.67
4. Step 4: Simplify right side
   67,980.30x = 2,908,069,760.54
5. Step 5: Solve for x
   x = 2,908,069,760.54/67,980.30
6. Step 6: Final answer
   x = 42,778.12