Finding the Fourth Proportional to 72,311.96, 99,796.25 and 53,278.70

Step by Step Solution

1. Step 1: Write the proportion equation
   72,311.96 : 99,796.25 = 53,278.70 : x
2. Step 2: Convert to fraction form
   72,311.96/99,796.25 = 53,278.70/x
3. Step 3: Cross multiply
   72,311.96x = 99,796.25 × 53,278.70
4. Step 4: Simplify right side
   72,311.96x = 5,317,014,099.09
5. Step 5: Solve for x
   x = 5,317,014,099.09/72,311.96
6. Step 6: Final answer
   x = 73,528.83