Finding the Fourth Proportional to 53,391.55, 73,659.15 and 30,718.34

Step by Step Solution

1. Step 1: Write the proportion equation
   53,391.55 : 73,659.15 = 30,718.34 : x
2. Step 2: Convert to fraction form
   53,391.55/73,659.15 = 30,718.34/x
3. Step 3: Cross multiply
   53,391.55x = 73,659.15 × 30,718.34
4. Step 4: Simplify right side
   53,391.55x = 2,262,686,635.34
5. Step 5: Solve for x
   x = 2,262,686,635.34/53,391.55
6. Step 6: Final answer
   x = 42,379.12