Finding the Fourth Proportional to 42,993.12, 64,525.24 and 21,948.72

Step by Step Solution

1. Step 1: Write the proportion equation
   42,993.12 : 64,525.24 = 21,948.72 : x
2. Step 2: Convert to fraction form
   42,993.12/64,525.24 = 21,948.72/x
3. Step 3: Cross multiply
   42,993.12x = 64,525.24 × 21,948.72
4. Step 4: Simplify right side
   42,993.12x = 1,416,246,425.69
5. Step 5: Solve for x
   x = 1,416,246,425.69/42,993.12
6. Step 6: Final answer
   x = 32,941.23