Finding the Fourth Proportional to 116,787, 175,291.26 and 72,279.12

Step by Step Solution

1. Step 1: Write the proportion equation
   116,787 : 175,291.26 = 72,279.12 : x
2. Step 2: Convert to fraction form
   116,787/175,291.26 = 72,279.12/x
3. Step 3: Cross multiply
   116,787x = 175,291.26 × 72,279.12
4. Step 4: Simplify right side
   116,787x = 12,669,898,016.49
5. Step 5: Solve for x
   x = 12,669,898,016.49/116,787
6. Step 6: Final answer
   x = 108,487.23