Finding the Fourth Proportional to 72,864.64, 109,323.20 and 37,820.80

Step by Step Solution

1. Step 1: Write the proportion equation
   72,864.64 : 109,323.20 = 37,820.80 : x
2. Step 2: Convert to fraction form
   72,864.64/109,323.20 = 37,820.80/x
3. Step 3: Cross multiply
   72,864.64x = 109,323.20 × 37,820.80
4. Step 4: Simplify right side
   72,864.64x = 4,134,690,882.56
5. Step 5: Solve for x
   x = 4,134,690,882.56/72,864.64
6. Step 6: Final answer
   x = 56,744.82