Finding the Fourth Proportional to 64,563, 89,101.80 and 39,417.36

Step by Step Solution

1. Step 1: Write the proportion equation
   64,563 : 89,101.80 = 39,417.36 : x
2. Step 2: Convert to fraction form
   64,563/89,101.80 = 39,417.36/x
3. Step 3: Cross multiply
   64,563x = 89,101.80 × 39,417.36
4. Step 4: Simplify right side
   64,563x = 3,512,157,727.25
5. Step 5: Solve for x
   x = 3,512,157,727.25/64,563
6. Step 6: Final answer
   x = 54,398.92