Finding the Fourth Proportional to 112,863.36, 155,752.02 and 65,118.72

Step by Step Solution

1. Step 1: Write the proportion equation
   112,863.36 : 155,752.02 = 65,118.72 : x
2. Step 2: Convert to fraction form
   112,863.36/155,752.02 = 65,118.72/x
3. Step 3: Cross multiply
   112,863.36x = 155,752.02 × 65,118.72
4. Step 4: Simplify right side
   112,863.36x = 10,142,372,179.81
5. Step 5: Solve for x
   x = 10,142,372,179.81/112,863.36
6. Step 6: Final answer
   x = 89,864.17