Finding the Fourth Proportional to 72,491.09, 99,991.67 and 52,377.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,491.09 : 99,991.67 = 52,377.50 : x
2. Step 2: Convert to fraction form
   72,491.09/99,991.67 = 52,377.50/x
3. Step 3: Cross multiply
   72,491.09x = 99,991.67 × 52,377.50
4. Step 4: Simplify right side
   72,491.09x = 5,237,313,683.52
5. Step 5: Solve for x
   x = 5,237,313,683.52/72,491.09
6. Step 6: Final answer
   x = 72,247.69