Finding the Fourth Proportional to 102,900.72, 154,109.16 and 50,144.88

Step by Step Solution

1. Step 1: Write the proportion equation
   102,900.72 : 154,109.16 = 50,144.88 : x
2. Step 2: Convert to fraction form
   102,900.72/154,109.16 = 50,144.88/x
3. Step 3: Cross multiply
   102,900.72x = 154,109.16 × 50,144.88
4. Step 4: Simplify right side
   102,900.72x = 7,727,785,335.10
5. Step 5: Solve for x
   x = 7,727,785,335.10/102,900.72
6. Step 6: Final answer
   x = 75,099.43