Finding the Fourth Proportional to 64,392.88, 96,588.84 and 20,019.55

Step by Step Solution

1. Step 1: Write the proportion equation
   64,392.88 : 96,588.84 = 20,019.55 : x
2. Step 2: Convert to fraction form
   64,392.88/96,588.84 = 20,019.55/x
3. Step 3: Cross multiply
   64,392.88x = 96,588.84 × 20,019.55
4. Step 4: Simplify right side
   64,392.88x = 1,933,665,111.82
5. Step 5: Solve for x
   x = 1,933,665,111.82/64,392.88
6. Step 6: Final answer
   x = 30,029.18