Finding the Fourth Proportional to 112,713.40, 155,506.73 and 64,965.73

Step by Step Solution

1. Step 1: Write the proportion equation
   112,713.40 : 155,506.73 = 64,965.73 : x
2. Step 2: Convert to fraction form
   112,713.40/155,506.73 = 64,965.73/x
3. Step 3: Cross multiply
   112,713.40x = 155,506.73 × 64,965.73
4. Step 4: Simplify right side
   112,713.40x = 10,102,607,456.83
5. Step 5: Solve for x
   x = 10,102,607,456.83/112,713.40
6. Step 6: Final answer
   x = 89,630.94