Finding the Fourth Proportional to 50,726.86, 69,981.06 and 30,572.30

Step by Step Solution

1. Step 1: Write the proportion equation
   50,726.86 : 69,981.06 = 30,572.30 : x
2. Step 2: Convert to fraction form
   50,726.86/69,981.06 = 30,572.30/x
3. Step 3: Cross multiply
   50,726.86x = 69,981.06 × 30,572.30
4. Step 4: Simplify right side
   50,726.86x = 2,139,481,960.64
5. Step 5: Solve for x
   x = 2,139,481,960.64/50,726.86
6. Step 6: Final answer
   x = 42,176.51