Finding the Fourth Proportional to 42,944.64, 64,407.60 and 21,862.32

Step by Step Solution

1. Step 1: Write the proportion equation
   42,944.64 : 64,407.60 = 21,862.32 : x
2. Step 2: Convert to fraction form
   42,944.64/64,407.60 = 21,862.32/x
3. Step 3: Cross multiply
   42,944.64x = 64,407.60 × 21,862.32
4. Step 4: Simplify right side
   42,944.64x = 1,408,099,561.63
5. Step 5: Solve for x
   x = 1,408,099,561.63/42,944.64
6. Step 6: Final answer
   x = 32,788.71