Finding the Fourth Proportional to 74,949.62, 103,436.37 and 42,685.60

Step by Step Solution

1. Step 1: Write the proportion equation
   74,949.62 : 103,436.37 = 42,685.60 : x
2. Step 2: Convert to fraction form
   74,949.62/103,436.37 = 42,685.60/x
3. Step 3: Cross multiply
   74,949.62x = 103,436.37 × 42,685.60
4. Step 4: Simplify right side
   74,949.62x = 4,415,243,515.27
5. Step 5: Solve for x
   x = 4,415,243,515.27/74,949.62
6. Step 6: Final answer
   x = 58,909.49