Finding the Fourth Proportional to 73,128.29, 100,917.70 and 42,914.10

Step by Step Solution

1. Step 1: Write the proportion equation
   73,128.29 : 100,917.70 = 42,914.10 : x
2. Step 2: Convert to fraction form
   73,128.29/100,917.70 = 42,914.10/x
3. Step 3: Cross multiply
   73,128.29x = 100,917.70 × 42,914.10
4. Step 4: Simplify right side
   73,128.29x = 4,330,792,540.73
5. Step 5: Solve for x
   x = 4,330,792,540.73/73,128.29
6. Step 6: Final answer
   x = 59,221.85