Finding the Fourth Proportional to 89,656.26, 123,688.56 and 53,350.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,656.26 : 123,688.56 = 53,350.50 : x
2. Step 2: Convert to fraction form
   89,656.26/123,688.56 = 53,350.50/x
3. Step 3: Cross multiply
   89,656.26x = 123,688.56 × 53,350.50
4. Step 4: Simplify right side
   89,656.26x = 6,598,846,520.28
5. Step 5: Solve for x
   x = 6,598,846,520.28/89,656.26
6. Step 6: Final answer
   x = 73,601.63