Finding the Fourth Proportional to 78,339.53, 108,155.72 and 73,856.18

Step by Step Solution

1. Step 1: Write the proportion equation
   78,339.53 : 108,155.72 = 73,856.18 : x
2. Step 2: Convert to fraction form
   78,339.53/108,155.72 = 73,856.18/x
3. Step 3: Cross multiply
   78,339.53x = 108,155.72 × 73,856.18
4. Step 4: Simplify right side
   78,339.53x = 7,987,968,324.35
5. Step 5: Solve for x
   x = 7,987,968,324.35/78,339.53
6. Step 6: Final answer
   x = 101,966.00