Finding the Fourth Proportional to 71,780.56, 99,060.42 and 41,567.20

Step by Step Solution

1. Step 1: Write the proportion equation
   71,780.56 : 99,060.42 = 41,567.20 : x
2. Step 2: Convert to fraction form
   71,780.56/99,060.42 = 41,567.20/x
3. Step 3: Cross multiply
   71,780.56x = 99,060.42 × 41,567.20
4. Step 4: Simplify right side
   71,780.56x = 4,117,664,290.22
5. Step 5: Solve for x
   x = 4,117,664,290.22/71,780.56
6. Step 6: Final answer
   x = 57,364.62