Finding the Fourth Proportional to 74,223.68, 102,426.56 and 42,391.92

Step by Step Solution

1. Step 1: Write the proportion equation
   74,223.68 : 102,426.56 = 42,391.92 : x
2. Step 2: Convert to fraction form
   74,223.68/102,426.56 = 42,391.92/x
3. Step 3: Cross multiply
   74,223.68x = 102,426.56 × 42,391.92
4. Step 4: Simplify right side
   74,223.68x = 4,342,058,537.40
5. Step 5: Solve for x
   x = 4,342,058,537.40/74,223.68
6. Step 6: Final answer
   x = 58,499.64