Finding the Fourth Proportional to 79,945.02, 110,790.72 and 78,817.50

Step by Step Solution

1. Step 1: Write the proportion equation
   79,945.02 : 110,790.72 = 78,817.50 : x
2. Step 2: Convert to fraction form
   79,945.02/110,790.72 = 78,817.50/x
3. Step 3: Cross multiply
   79,945.02x = 110,790.72 × 78,817.50
4. Step 4: Simplify right side
   79,945.02x = 8,732,247,573.60
5. Step 5: Solve for x
   x = 8,732,247,573.60/79,945.02
6. Step 6: Final answer
   x = 109,228.16