Finding the Fourth Proportional to 71,796.80, 99,078.72 and 41,988.80

Step by Step Solution

1. Step 1: Write the proportion equation
   71,796.80 : 99,078.72 = 41,988.80 : x
2. Step 2: Convert to fraction form
   71,796.80/99,078.72 = 41,988.80/x
3. Step 3: Cross multiply
   71,796.80x = 99,078.72 × 41,988.80
4. Step 4: Simplify right side
   71,796.80x = 4,160,196,558.34
5. Step 5: Solve for x
   x = 4,160,196,558.34/71,796.80
6. Step 6: Final answer
   x = 57,944.04