Finding the Fourth Proportional to 73,218.72, 101,041.92 and 39,684.72

Step by Step Solution

1. Step 1: Write the proportion equation
   73,218.72 : 101,041.92 = 39,684.72 : x
2. Step 2: Convert to fraction form
   73,218.72/101,041.92 = 39,684.72/x
3. Step 3: Cross multiply
   73,218.72x = 101,041.92 × 39,684.72
4. Step 4: Simplify right side
   73,218.72x = 4,009,820,303.46
5. Step 5: Solve for x
   x = 4,009,820,303.46/73,218.72
6. Step 6: Final answer
   x = 54,764.96