Finding the Fourth Proportional to 74,647.07, 103,011.89 and 42,815.28

Step by Step Solution

1. Step 1: Write the proportion equation
   74,647.07 : 103,011.89 = 42,815.28 : x
2. Step 2: Convert to fraction form
   74,647.07/103,011.89 = 42,815.28/x
3. Step 3: Cross multiply
   74,647.07x = 103,011.89 × 42,815.28
4. Step 4: Simplify right side
   74,647.07x = 4,410,483,085.90
5. Step 5: Solve for x
   x = 4,410,483,085.90/74,647.07
6. Step 6: Final answer
   x = 59,084.48