Finding the Fourth Proportional to 55,019.52, 75,927.55 and 31,145.67

Step by Step Solution

1. Step 1: Write the proportion equation
   55,019.52 : 75,927.55 = 31,145.67 : x
2. Step 2: Convert to fraction form
   55,019.52/75,927.55 = 31,145.67/x
3. Step 3: Cross multiply
   55,019.52x = 75,927.55 × 31,145.67
4. Step 4: Simplify right side
   55,019.52x = 2,364,814,683.89
5. Step 5: Solve for x
   x = 2,364,814,683.89/55,019.52
6. Step 6: Final answer
   x = 42,981.37