Finding the Fourth Proportional to 45,706.14, 68,369.61 and 42,906.78

Step by Step Solution

1. Step 1: Write the proportion equation
   45,706.14 : 68,369.61 = 42,906.78 : x
2. Step 2: Convert to fraction form
   45,706.14/68,369.61 = 42,906.78/x
3. Step 3: Cross multiply
   45,706.14x = 68,369.61 × 42,906.78
4. Step 4: Simplify right side
   45,706.14x = 2,933,519,814.96
5. Step 5: Solve for x
   x = 2,933,519,814.96/45,706.14
6. Step 6: Final answer
   x = 64,182.18