Finding the Fourth Proportional to 112,865.96, 155,760.08 and 64,472.10

Step by Step Solution

1. Step 1: Write the proportion equation
   112,865.96 : 155,760.08 = 64,472.10 : x
2. Step 2: Convert to fraction form
   112,865.96/155,760.08 = 64,472.10/x
3. Step 3: Cross multiply
   112,865.96x = 155,760.08 × 64,472.10
4. Step 4: Simplify right side
   112,865.96x = 10,042,179,131.41
5. Step 5: Solve for x
   x = 10,042,179,131.41/112,865.96
6. Step 6: Final answer
   x = 88,974.39