Finding the Fourth Proportional to 55,003.43, 75,906.54 and 31,129.58

Step by Step Solution

1. Step 1: Write the proportion equation
   55,003.43 : 75,906.54 = 31,129.58 : x
2. Step 2: Convert to fraction form
   55,003.43/75,906.54 = 31,129.58/x
3. Step 3: Cross multiply
   55,003.43x = 75,906.54 × 31,129.58
4. Step 4: Simplify right side
   55,003.43x = 2,362,938,899.22
5. Step 5: Solve for x
   x = 2,362,938,899.22/55,003.43
6. Step 6: Final answer
   x = 42,959.84