Finding the Fourth Proportional to 118,104.99, 162,987.96 and 72,812.89

Step by Step Solution

1. Step 1: Write the proportion equation
   118,104.99 : 162,987.96 = 72,812.89 : x
2. Step 2: Convert to fraction form
   118,104.99/162,987.96 = 72,812.89/x
3. Step 3: Cross multiply
   118,104.99x = 162,987.96 × 72,812.89
4. Step 4: Simplify right side
   118,104.99x = 11,867,624,879.59
5. Step 5: Solve for x
   x = 11,867,624,879.59/118,104.99
6. Step 6: Final answer
   x = 100,483.69