Finding the Fourth Proportional to 64,421.72, 88,891.72 and 41,791.74

Step by Step Solution

1. Step 1: Write the proportion equation
   64,421.72 : 88,891.72 = 41,791.74 : x
2. Step 2: Convert to fraction form
   64,421.72/88,891.72 = 41,791.74/x
3. Step 3: Cross multiply
   64,421.72x = 88,891.72 × 41,791.74
4. Step 4: Simplify right side
   64,421.72x = 3,714,939,650.39
5. Step 5: Solve for x
   x = 3,714,939,650.39/64,421.72
6. Step 6: Final answer
   x = 57,665.95