Finding the Fourth Proportional to 42,980.82, 64,570.07 and 30,531.14

Step by Step Solution

1. Step 1: Write the proportion equation
   42,980.82 : 64,570.07 = 30,531.14 : x
2. Step 2: Convert to fraction form
   42,980.82/64,570.07 = 30,531.14/x
3. Step 3: Cross multiply
   42,980.82x = 64,570.07 × 30,531.14
4. Step 4: Simplify right side
   42,980.82x = 1,971,397,846.98
5. Step 5: Solve for x
   x = 1,971,397,846.98/42,980.82
6. Step 6: Final answer
   x = 45,866.92