Finding the Fourth Proportional to 72,426.60, 99,761.76 and 51,168.96

Step by Step Solution

1. Step 1: Write the proportion equation
   72,426.60 : 99,761.76 = 51,168.96 : x
2. Step 2: Convert to fraction form
   72,426.60/99,761.76 = 51,168.96/x
3. Step 3: Cross multiply
   72,426.60x = 99,761.76 × 51,168.96
4. Step 4: Simplify right side
   72,426.60x = 5,104,705,506.97
5. Step 5: Solve for x
   x = 5,104,705,506.97/72,426.60
6. Step 6: Final answer
   x = 70,481.09