Finding the Fourth Proportional to 64,218.07, 88,651.87 and 42,743.55

Step by Step Solution

1. Step 1: Write the proportion equation
   64,218.07 : 88,651.87 = 42,743.55 : x
2. Step 2: Convert to fraction form
   64,218.07/88,651.87 = 42,743.55/x
3. Step 3: Cross multiply
   64,218.07x = 88,651.87 × 42,743.55
4. Step 4: Simplify right side
   64,218.07x = 3,789,295,364.86
5. Step 5: Solve for x
   x = 3,789,295,364.86/64,218.07
6. Step 6: Final answer
   x = 59,006.69