Finding the Fourth Proportional to 45,978.37, 68,967.46 and 12,698.35

Step by Step Solution

1. Step 1: Write the proportion equation
   45,978.37 : 68,967.46 = 12,698.35 : x
2. Step 2: Convert to fraction form
   45,978.37/68,967.46 = 12,698.35/x
3. Step 3: Cross multiply
   45,978.37x = 68,967.46 × 12,698.35
4. Step 4: Simplify right side
   45,978.37x = 875,772,789.15
5. Step 5: Solve for x
   x = 875,772,789.15/45,978.37
6. Step 6: Final answer
   x = 19,047.50