Finding the Fourth Proportional to 73,287.15, 109,949.67 and 42,917.93

Step by Step Solution

1. Step 1: Write the proportion equation
   73,287.15 : 109,949.67 = 42,917.93 : x
2. Step 2: Convert to fraction form
   73,287.15/109,949.67 = 42,917.93/x
3. Step 3: Cross multiply
   73,287.15x = 109,949.67 × 42,917.93
4. Step 4: Simplify right side
   73,287.15x = 4,718,812,103.15
5. Step 5: Solve for x
   x = 4,718,812,103.15/73,287.15
6. Step 6: Final answer
   x = 64,387.99