Finding the Fourth Proportional to 56,640.71, 78,144.72 and 35,122.73

Step by Step Solution

1. Step 1: Write the proportion equation
   56,640.71 : 78,144.72 = 35,122.73 : x
2. Step 2: Convert to fraction form
   56,640.71/78,144.72 = 35,122.73/x
3. Step 3: Cross multiply
   56,640.71x = 78,144.72 × 35,122.73
4. Step 4: Simplify right side
   56,640.71x = 2,744,655,379.05
5. Step 5: Solve for x
   x = 2,744,655,379.05/56,640.71
6. Step 6: Final answer
   x = 48,457.29