Finding the Fourth Proportional to 72,523.32, 108,788.76 and 19,931.64

Step by Step Solution

1. Step 1: Write the proportion equation
   72,523.32 : 108,788.76 = 19,931.64 : x
2. Step 2: Convert to fraction form
   72,523.32/108,788.76 = 19,931.64/x
3. Step 3: Cross multiply
   72,523.32x = 108,788.76 × 19,931.64
4. Step 4: Simplify right side
   72,523.32x = 2,168,338,400.37
5. Step 5: Solve for x
   x = 2,168,338,400.37/72,523.32
6. Step 6: Final answer
   x = 29,898.50