Finding the Fourth Proportional to 74,856.91, 103,300.89 and 40,864.10

Step by Step Solution

1. Step 1: Write the proportion equation
   74,856.91 : 103,300.89 = 40,864.10 : x
2. Step 2: Convert to fraction form
   74,856.91/103,300.89 = 40,864.10/x
3. Step 3: Cross multiply
   74,856.91x = 103,300.89 × 40,864.10
4. Step 4: Simplify right side
   74,856.91x = 4,221,297,574.10
5. Step 5: Solve for x
   x = 4,221,297,574.10/74,856.91
6. Step 6: Final answer
   x = 56,391.56