Finding the Fourth Proportional to 55,301.29, 76,315.05 and 31,102.25

Step by Step Solution

1. Step 1: Write the proportion equation
   55,301.29 : 76,315.05 = 31,102.25 : x
2. Step 2: Convert to fraction form
   55,301.29/76,315.05 = 31,102.25/x
3. Step 3: Cross multiply
   55,301.29x = 76,315.05 × 31,102.25
4. Step 4: Simplify right side
   55,301.29x = 2,373,569,382.29
5. Step 5: Solve for x
   x = 2,373,569,382.29/55,301.29
6. Step 6: Final answer
   x = 42,920.69