Finding the Fourth Proportional to 40,061.21, 55,225.53 and 31,536.02

Step by Step Solution

1. Step 1: Write the proportion equation
   40,061.21 : 55,225.53 = 31,536.02 : x
2. Step 2: Convert to fraction form
   40,061.21/55,225.53 = 31,536.02/x
3. Step 3: Cross multiply
   40,061.21x = 55,225.53 × 31,536.02
4. Step 4: Simplify right side
   40,061.21x = 1,741,593,418.59
5. Step 5: Solve for x
   x = 1,741,593,418.59/40,061.21
6. Step 6: Final answer
   x = 43,473.31