Finding the Fourth Proportional to 45,978.10, 68,967.30 and 12,697.43

Step by Step Solution

1. Step 1: Write the proportion equation
   45,978.10 : 68,967.30 = 12,697.43 : x
2. Step 2: Convert to fraction form
   45,978.10/68,967.30 = 12,697.43/x
3. Step 3: Cross multiply
   45,978.10x = 68,967.30 × 12,697.43
4. Step 4: Simplify right side
   45,978.10x = 875,707,095.39
5. Step 5: Solve for x
   x = 875,707,095.39/45,978.10
6. Step 6: Final answer
   x = 19,046.18