Finding the Fourth Proportional to 64,651.56, 89,270.82 and 42,001.80

Step by Step Solution

1. Step 1: Write the proportion equation
   64,651.56 : 89,270.82 = 42,001.80 : x
2. Step 2: Convert to fraction form
   64,651.56/89,270.82 = 42,001.80/x
3. Step 3: Cross multiply
   64,651.56x = 89,270.82 × 42,001.80
4. Step 4: Simplify right side
   64,651.56x = 3,749,535,127.48
5. Step 5: Solve for x
   x = 3,749,535,127.48/64,651.56
6. Step 6: Final answer
   x = 57,996.05