Finding the Fourth Proportional to 50,003.09, 69,017.51 and 31,129.01

Step by Step Solution

1. Step 1: Write the proportion equation
   50,003.09 : 69,017.51 = 31,129.01 : x
2. Step 2: Convert to fraction form
   50,003.09/69,017.51 = 31,129.01/x
3. Step 3: Cross multiply
   50,003.09x = 69,017.51 × 31,129.01
4. Step 4: Simplify right side
   50,003.09x = 2,148,446,603.32
5. Step 5: Solve for x
   x = 2,148,446,603.32/50,003.09
6. Step 6: Final answer
   x = 42,966.28