Finding the Fourth Proportional to 31,602.56, 43,615.73 and 30,564.07

Step by Step Solution

1. Step 1: Write the proportion equation
   31,602.56 : 43,615.73 = 30,564.07 : x
2. Step 2: Convert to fraction form
   31,602.56/43,615.73 = 30,564.07/x
3. Step 3: Cross multiply
   31,602.56x = 43,615.73 × 30,564.07
4. Step 4: Simplify right side
   31,602.56x = 1,333,074,192.19
5. Step 5: Solve for x
   x = 1,333,074,192.19/31,602.56
6. Step 6: Final answer
   x = 42,182.48