Finding the Fourth Proportional to 108,101.93, 162,011.79 and 78,216.83

Step by Step Solution

1. Step 1: Write the proportion equation
   108,101.93 : 162,011.79 = 78,216.83 : x
2. Step 2: Convert to fraction form
   108,101.93/162,011.79 = 78,216.83/x
3. Step 3: Cross multiply
   108,101.93x = 162,011.79 × 78,216.83
4. Step 4: Simplify right side
   108,101.93x = 12,672,047,826.37
5. Step 5: Solve for x
   x = 12,672,047,826.37/108,101.93
6. Step 6: Final answer
   x = 117,223.15