Finding the Fourth Proportional to 56,550, 78,042.24 and 31,401.12

Step by Step Solution

1. Step 1: Write the proportion equation
   56,550 : 78,042.24 = 31,401.12 : x
2. Step 2: Convert to fraction form
   56,550/78,042.24 = 31,401.12/x
3. Step 3: Cross multiply
   56,550x = 78,042.24 × 31,401.12
4. Step 4: Simplify right side
   56,550x = 2,450,613,743.31
5. Step 5: Solve for x
   x = 2,450,613,743.31/56,550
6. Step 6: Final answer
   x = 43,335.34