Finding the Fourth Proportional to 124,980.72, 187,470.17 and 50,099.78

Step by Step Solution

1. Step 1: Write the proportion equation
   124,980.72 : 187,470.17 = 50,099.78 : x
2. Step 2: Convert to fraction form
   124,980.72/187,470.17 = 50,099.78/x
3. Step 3: Cross multiply
   124,980.72x = 187,470.17 × 50,099.78
4. Step 4: Simplify right side
   124,980.72x = 9,392,213,336.21
5. Step 5: Solve for x
   x = 9,392,213,336.21/124,980.72
6. Step 6: Final answer
   x = 75,149.30