Finding the Fourth Proportional to 76,491.81, 105,473.61 and 52,296.72

Step by Step Solution

1. Step 1: Write the proportion equation
   76,491.81 : 105,473.61 = 52,296.72 : x
2. Step 2: Convert to fraction form
   76,491.81/105,473.61 = 52,296.72/x
3. Step 3: Cross multiply
   76,491.81x = 105,473.61 × 52,296.72
4. Step 4: Simplify right side
   76,491.81x = 5,515,923,849.56
5. Step 5: Solve for x
   x = 5,515,923,849.56/76,491.81
6. Step 6: Final answer
   x = 72,111.30