Finding the Fourth Proportional to 51,105.70, 76,630.72 and 17,816.81

Step by Step Solution

1. Step 1: Write the proportion equation
   51,105.70 : 76,630.72 = 17,816.81 : x
2. Step 2: Convert to fraction form
   51,105.70/76,630.72 = 17,816.81/x
3. Step 3: Cross multiply
   51,105.70x = 76,630.72 × 17,816.81
4. Step 4: Simplify right side
   51,105.70x = 1,365,314,978.40
5. Step 5: Solve for x
   x = 1,365,314,978.40/51,105.70
6. Step 6: Final answer
   x = 26,715.52