Finding the Fourth Proportional to 53,478.72, 73,809.23 and 40,711.50

Step by Step Solution

1. Step 1: Write the proportion equation
   53,478.72 : 73,809.23 = 40,711.50 : x
2. Step 2: Convert to fraction form
   53,478.72/73,809.23 = 40,711.50/x
3. Step 3: Cross multiply
   53,478.72x = 73,809.23 × 40,711.50
4. Step 4: Simplify right side
   53,478.72x = 3,004,884,263.59
5. Step 5: Solve for x
   x = 3,004,884,263.59/53,478.72
6. Step 6: Final answer
   x = 56,188.41