Finding the Fourth Proportional to 74,086.49, 102,238.32 and 42,255.92

Step by Step Solution

1. Step 1: Write the proportion equation
   74,086.49 : 102,238.32 = 42,255.92 : x
2. Step 2: Convert to fraction form
   74,086.49/102,238.32 = 42,255.92/x
3. Step 3: Cross multiply
   74,086.49x = 102,238.32 × 42,255.92
4. Step 4: Simplify right side
   74,086.49x = 4,320,174,270.85
5. Step 5: Solve for x
   x = 4,320,174,270.85/74,086.49
6. Step 6: Final answer
   x = 58,312.58