Finding the Fourth Proportional to 45,978.98, 68,927.42 and 19,670.18

Step by Step Solution

1. Step 1: Write the proportion equation
   45,978.98 : 68,927.42 = 19,670.18 : x
2. Step 2: Convert to fraction form
   45,978.98/68,927.42 = 19,670.18/x
3. Step 3: Cross multiply
   45,978.98x = 68,927.42 × 19,670.18
4. Step 4: Simplify right side
   45,978.98x = 1,355,814,758.34
5. Step 5: Solve for x
   x = 1,355,814,758.34/45,978.98
6. Step 6: Final answer
   x = 29,487.71