Finding the Fourth Proportional to 103,039.24, 142,507.20 and 92,425

Step by Step Solution

1. Step 1: Write the proportion equation
   103,039.24 : 142,507.20 = 92,425 : x
2. Step 2: Convert to fraction form
   103,039.24/142,507.20 = 92,425/x
3. Step 3: Cross multiply
   103,039.24x = 142,507.20 × 92,425
4. Step 4: Simplify right side
   103,039.24x = 13,171,227,960.00
5. Step 5: Solve for x
   x = 13,171,227,960.00/103,039.24
6. Step 6: Final answer
   x = 127,827.30