Finding the Fourth Proportional to 112,678.37, 155,601.50 and 72,461.96

Step by Step Solution

1. Step 1: Write the proportion equation
   112,678.37 : 155,601.50 = 72,461.96 : x
2. Step 2: Convert to fraction form
   112,678.37/155,601.50 = 72,461.96/x
3. Step 3: Cross multiply
   112,678.37x = 155,601.50 × 72,461.96
4. Step 4: Simplify right side
   112,678.37x = 11,275,188,528.62
5. Step 5: Solve for x
   x = 11,275,188,528.62/112,678.37
6. Step 6: Final answer
   x = 100,065.25