Finding the Fourth Proportional to 74,747.72, 103,160.61 and 42,487.19

Step by Step Solution

1. Step 1: Write the proportion equation
   74,747.72 : 103,160.61 = 42,487.19 : x
2. Step 2: Convert to fraction form
   74,747.72/103,160.61 = 42,487.19/x
3. Step 3: Cross multiply
   74,747.72x = 103,160.61 × 42,487.19
4. Step 4: Simplify right side
   74,747.72x = 4,383,004,308.64
5. Step 5: Solve for x
   x = 4,383,004,308.64/74,747.72
6. Step 6: Final answer
   x = 58,637.30