Finding the Fourth Proportional to 102,119.50, 153,187.89 and 28,247.50

Step by Step Solution

1. Step 1: Write the proportion equation
   102,119.50 : 153,187.89 = 28,247.50 : x
2. Step 2: Convert to fraction form
   102,119.50/153,187.89 = 28,247.50/x
3. Step 3: Cross multiply
   102,119.50x = 153,187.89 × 28,247.50
4. Step 4: Simplify right side
   102,119.50x = 4,327,174,922.78
5. Step 5: Solve for x
   x = 4,327,174,922.78/102,119.50
6. Step 6: Final answer
   x = 42,373.64