Finding the Fourth Proportional to 64,854.82, 96,637.52 and 57,780.48

Step by Step Solution

1. Step 1: Write the proportion equation
   64,854.82 : 96,637.52 = 57,780.48 : x
2. Step 2: Convert to fraction form
   64,854.82/96,637.52 = 57,780.48/x
3. Step 3: Cross multiply
   64,854.82x = 96,637.52 × 57,780.48
4. Step 4: Simplify right side
   64,854.82x = 5,583,762,291.61
5. Step 5: Solve for x
   x = 5,583,762,291.61/64,854.82
6. Step 6: Final answer
   x = 86,096.34