Finding the Fourth Proportional to 72,987.92, 109,484.58 and 32,999.30

Step by Step Solution

1. Step 1: Write the proportion equation
   72,987.92 : 109,484.58 = 32,999.30 : x
2. Step 2: Convert to fraction form
   72,987.92/109,484.58 = 32,999.30/x
3. Step 3: Cross multiply
   72,987.92x = 109,484.58 × 32,999.30
4. Step 4: Simplify right side
   72,987.92x = 3,612,914,500.79
5. Step 5: Solve for x
   x = 3,612,914,500.79/72,987.92
6. Step 6: Final answer
   x = 49,500.17