Finding the Fourth Proportional to 42,974.82, 64,561.05 and 30,525.12

Step by Step Solution

1. Step 1: Write the proportion equation
   42,974.82 : 64,561.05 = 30,525.12 : x
2. Step 2: Convert to fraction form
   42,974.82/64,561.05 = 30,525.12/x
3. Step 3: Cross multiply
   42,974.82x = 64,561.05 × 30,525.12
4. Step 4: Simplify right side
   42,974.82x = 1,970,733,798.58
5. Step 5: Solve for x
   x = 1,970,733,798.58/42,974.82
6. Step 6: Final answer
   x = 45,857.87